diff --git a/README.md b/README.md
index 3b852c8..270b836 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ var map = L.map('map', {
 	    icon: 'images/zoom-out.png',
 	    callback: zoomOut
 	}]
-});    
+});
 
 
 function showCoordinates (e) {
@@ -145,7 +145,7 @@ Returns `true` if the context menu is currently visible.
 The following methods are available on supported layer types when using the context menu mixin.
 
 ````javascript
-bindContextMenu(contextMenuOptions)    
+bindContextMenu(contextMenuOptions)
 ````
 Binds a context menu to the feature the method is called on.
 
@@ -153,7 +153,7 @@ Binds a context menu to the feature the method is called on.
 unbindContextMenu()
 ````
 Unbinds the context menu previously bound to the feature with the bindContextMenu() method.
-    
+
 ###Events
 
 The following events are triggered on the map:
@@ -221,6 +221,14 @@ Fired when a menu item is disabled.
 | contextmenu | Map.ContextMenu | The context menu.
 | el | HTMLElement | The context menu item element.
 
+##Development
+
+Edit files in `src/`. To build the files in `dist/`, run:
+
+````shell
+npm install
+npm run build
+````
+
 ##License
 This software is released under the [MIT licence](http://www.opensource.org/licenses/mit-license.php). Icons used in the example are from [http://glyphicons.com](http://glyphicons.com).
-
diff --git a/package.json b/package.json
index e85195e..46dc3da 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   },
   "scripts": {
     "concat": "cat src/copyright.js src/Map.ContextMenu.js src/Mixin.ContextMenu.js src/end.js > dist/leaflet.contextmenu.js",
-    "compress": "uglifyjs dist/leaflet.contextmenu.js -m --comments -o dist/leaflet.contextmenu.min.js; uglifycss dist/leaflet.contextmenu.css > dist/leaflet.contextmenu.min.css",
+    "compress": "node_modules/uglify-js/bin/uglifyjs dist/leaflet.contextmenu.js -m --comments -o dist/leaflet.contextmenu.min.js; node_modules/uglifycss/uglifycss dist/leaflet.contextmenu.css > dist/leaflet.contextmenu.min.css",
     "build": "npm run concat && npm run compress"
   },
   "repository": {
@@ -29,6 +29,7 @@
   },
   "homepage": "https://github.com/aratcliffe/Leaflet.contextmenu",
   "devDependencies": {
-    "uglifyjs": "^2.3.6"
+    "uglify-js": "^2.7.4",
+    "uglifycss": "^0.0.25"
   }
 }