diff --git a/.travis.yml b/.travis.yml
index 5218daa21..61ae833f1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,3 @@ node_js:
   - "5"
   - "6"
 sudo: false
-before_script:
-  - make clean
-  - make
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 093578807..0c363a12c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -17,7 +17,7 @@ Please [search for your issue before filing it: many bugs and improvements have
 
 To report a bug:
 
-* Write specifically what browser (type and version, like "Firefox 43.0"), OS,
+* Write specifically what browser (type and version, like "Firefox 49.0"), OS,
 and browser extensions you have installed
 * Write steps to replicate the error: when did it happen? What did you expect to happen?
 What happened instead?
@@ -99,8 +99,9 @@ to iD, only display them in the interface through the `t()` function.
 Then, add the new string to `data/core.yaml`. The translation system, Transifex,
 will automatically detect the change.
 
-Use `make` to build the translations with the local changes.
-`make translate` can be used to pull the latest translations from Transifex.
+Use `npm run build` to build the translations with the local changes.
+
+`npm run translations` can be used to pull the latest translations from Transifex.
 
 ## Contributing Documentation
 
@@ -161,23 +162,19 @@ Just like HTML and JavaScript, 4 space soft tabs always.
 ```
 
 We write vanilla CSS with no preprocessing step. Since iD targets modern browsers,
-feel free to use newer features wisely.
+(Chrome, Firefox, Safair, Opera, IE11, and Edge) feel free to use newer features wisely.
 
 ## Tests
 
 Test your code and make sure it passes.
 
-First ensure you have a `phantomjs` binary, version 2.0 or later, available on your `$PATH`. On a Mac,
-you can install this via homebrew with `brew install phantomjs`. Then:
-
 1. Go to the directory where you have checked out `iD`
 2. run `npm install`
-3. run `make`
-4. run `npm test` to see whether your tests pass or fail.
+3. run `npm test` to see whether your tests pass or fail.
 
 ## Building / Installing
 
-You can build a concatenated and minified version of iD with the command `make && npm run build-min`.
+You can rebuild iD completely with the command `npm run all`.
 
 iD will be built to the `dist` directory. This directory is self-contained; you can copy it
 into the public directory of your webserver to deploy iD.
@@ -197,13 +194,12 @@ In your local copy, make a branch for this change:
 
     git checkout -b make-red
 
-Make your changes to source files. By source files we mean the files in `js/`.
-the `iD.js` and `iD.min.js` files in this project are autogenerated - don't edit
-them.
+Make your changes to source files under `modules/`.
+The `iD.js` and `iD.min.js` files in this project are autogenerated - don't edit them.
 
-So let's say you've changed `js/ui/confirm.js`.
+So let's say you've changed `modules/ui/confirm.js`.
 
-1. Run `eslint js/id` to make sure your code is clean
-2. Run tests with `npm test`
+1. Try it out locally.  Run `npm start` and visit `localhost:8080` in a browser.
+2. Run lint and tests with `npm test`
 3. Commit your changes with an informative commit message
 4. [Submit a pull request](https://help.github.com/articles/using-pull-requests) to the `openstreetmap/iD` project.
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 034dbc637..000000000
--- a/Makefile
+++ /dev/null
@@ -1,24 +0,0 @@
-all: \
-	dist/iD.css \
-	dist/img/iD-sprite.svg \
-	dist/img/maki-sprite.svg
-
-MAKI_SOURCES = node_modules/maki/src/*.svg
-
-dist/img/maki-sprite.svg: $(MAKI_SOURCES) Makefile
-	node_modules/.bin/svg-sprite --symbol --symbol-dest . --symbol-sprite $@ $(MAKI_SOURCES)
-
-dist/img/iD-sprite.svg: svg/iD-sprite.src.svg svg/iD-sprite.json
-	node svg/spriteify.js --svg svg/iD-sprite.src.svg --json svg/iD-sprite.json > $@
-
-dist/iD.css: css/*.css
-	cat css/reset.css css/map.css css/app.css > $@
-
-translations:
-	node data/update_locales
-
-imagery:
-	node data/update_imagery
-
-clean:
-	rm -f dist/*.js dist/*.map dist/*.css dist/img/*.svg
diff --git a/README.md b/README.md
index a548c533f..e035487cb 100644
--- a/README.md
+++ b/README.md
@@ -22,26 +22,19 @@
   * Stable mirror of `release` branch:  http://openstreetmap.us/iD/release
   * Development mirror of `master` branch:  http://openstreetmap.us/iD/master
 
-Come on in, the water's lovely. More help? Ping `jfire` or `bhousel` on
-[OpenStreetMap IRC](http://wiki.openstreetmap.org/wiki/IRC)
-(`irc.oftc.net`, in `#iD` or `#osm-dev` or `#osm`) or on the [OpenStreetMap `dev` mailing list](http://wiki.openstreetmap.org/wiki/Mailing_lists).
+Come on in, the water's lovely. More help? Ping `jfire` or `bhousel` on:
+* [OpenStreetMap US Slack](https://osmus-slack.herokuapp.com/)
+(`#dev` or `#general` channels)
+* [OpenStreetMap IRC](http://wiki.openstreetmap.org/wiki/IRC)
+(`irc.oftc.net`, in `#iD` or `#osm-dev` or `#osm`)
+* [OpenStreetMap `dev` mailing list](http://wiki.openstreetmap.org/wiki/Mailing_lists)
 
 ## Prerequisites
 
 * [Node.js](http://nodejs.org/) version 4 or newer
-* Command line development tools (`make`, `git`, and a compiler) for your platform
-  * Ubuntu:
-    * `sudo apt-get install build-essential git`
-  * macOS:
-    * Run `xcode-select --install` from a command line or install [Xcode](https://developer.apple.com/xcode/)
-  * Windows (Cygwin):
-    * Install [Git for Windows](https://git-scm.com/downloads)
-    * Install [Cygwin](https://cygwin.com/install.html) - choose default packages + `make`, `wget`, `apache2` (needed for updated mime type list)
-    * Optionally, install [apt-cyg](https://github.com/transcode-open/apt-cyg) for managing your Cygwin packages
-    * Edit `~/.bashrc`:<br/>
-      Put Git for Windows before Cygwin in PATH, otherwise `npm install` may [fail to fetch git repositories](https://github.com/npm/npm/issues/7456)<br/><pre>
-      export PATH=/cygdrive/c/Program\ Files/Git/mingw64/bin/:$PATH</pre>
-    * Edit `~/.gitconfig`:<br/>
+* [`git`](https://www.atlassian.com/git/tutorials/install-git/) for your platform
+  * Note for Windows users:
+    * Edit `$HOME\.gitconfig`:<br/>
       Add these lines to avoid checking in files with CRLF newlines<br><pre>
       [core]
           autocrlf = input</pre>
@@ -52,10 +45,9 @@ To run the current development version of iD on your own computer:
 
 1. Create a local `git clone` of the project, then `cd` into the project folder
 2. (Windows Only)  Run `fixWinSymlinks.bat`.  This script will prompt for Administrator rights.  see also: http://stackoverflow.com/questions/5917249/git-symlinks-in-windows
-3. Run `npm install`
-4. Run `make`
-5. Run `npm start`
-6. Open `http://localhost:8080/` in a web browser
+3. Run `npm install`  (this will run the `prepublish` script that builds everything)
+4. Run `npm start`
+5. Open `http://localhost:8080/` in a web browser
 
 For guidance on building a packaged version, running tests, and contributing to
 development, see [CONTRIBUTING.md](CONTRIBUTING.md).
diff --git a/RELEASING.md b/RELEASING.md
index fd9080323..449a112a1 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -13,21 +13,19 @@
 
 ### Update master branch
 - [ ] git checkout master
-- [ ] make translations
-- [ ] git add . && git commit -m 'make translations'
-- [ ] make imagery
-- [ ] git add . && git commit -m 'make imagery'
-- [ ] make suggestions
-- [ ] git add . && git commit -m 'make suggestions'
+- [ ] npm run translations
+- [ ] git add . && git commit -m 'npm run translations'
+- [ ] npm run imagery
+- [ ] git add . && git commit -m 'npm run imagery'
 - [ ] Update `CHANGELOG.md`
-- [ ] Update version number in `id.js`, `package.json`
+- [ ] Update version number in `modules/core/context.js`, `package.json`
 - [ ] git add . && git commit -m 'A.B.C'
 - [ ] git push origin master
 
 ### Update and tag release branch
 - [ ] git checkout release
 - [ ] git reset --hard master
-- [ ] make
+- [ ] npm run all
 - [ ] git add -f dist/*.css dist/*.js dist/img/*.svg dist/locales/*.json
 - [ ] git commit -m 'Check in build'
 - [ ] git tag vA.B.C
diff --git a/package.json b/package.json
index 285651f18..016d688e1 100644
--- a/package.json
+++ b/package.json
@@ -8,11 +8,21 @@
     "test": "test"
   },
   "scripts": {
+    "all": "npm run clean && npm run build-assets && npm run build && npm run build-min",
     "build": "node build.js && node development_server.js",
-    "build-min": "npm run build && uglifyjs dist/iD.js -c -m -o dist/iD.min.js",
+    "build-assets": "npm run build-css && npm run build-svg",
+    "build-css": "cat css/reset.css css/map.css css/app.css > dist/iD.css",
+    "build-min": "uglifyjs dist/iD.js -c -m -o dist/iD.min.js",
+    "build-svg": "npm run build-svg-maki && npm run build-svg-id",
+    "build-svg-maki": "svg-sprite --symbol --symbol-dest . --symbol-sprite dist/img/maki-sprite.svg node_modules/maki/src/*.svg",
+    "build-svg-id": "node svg/spriteify.js --svg svg/iD-sprite.src.svg --json svg/iD-sprite.json > dist/img/iD-sprite.svg",
+    "clean": "rm -f dist/*.js dist/*.map dist/*.css dist/img/*.svg",
+    "imagery": "node data/update_imagery",
     "lint": "eslint *.js js/id test/spec modules",
+    "prepublish": "npm run all",
     "start": "node development_server.js develop",
-    "test": "npm run lint && npm run build && phantomjs node_modules/mocha-phantomjs-core/mocha-phantomjs-core.js test/index.html spec"
+    "test": "npm run lint && npm run build && phantomjs node_modules/mocha-phantomjs-core/mocha-phantomjs-core.js test/index.html spec",
+    "translations": "node data/update_locales"
   },
   "repository": {
     "type": "git",