npm: Add start:local, start:staging and start:live scripts

The proxy shouldn't be overwritten by default, otherwise ember-cli-mirage and
pretender don't work.

Author: Turbo87

.ember-cli

@@ -5,6 +5,5 @@
 
     Setting `disableAnalytics` to true will prevent any data from being sent.
   */
-  "proxy": "http://127.0.0.1:8888/",
   "disableAnalytics": false
 }

README.md

@@ -17,7 +17,7 @@ which enables tweaking the UI of the site without actually having the server
 running locally. To get up and running with just the UI, run:
 
 ```
-npm run start:ui
+npm run start:staging
 ```
 
 This will give you a local server to browse while using the staging backend
@@ -29,6 +29,12 @@ If you'd like to run the server with a specific different backend, you can speci
 npm start -- --proxy https://crates.io
 ```
 
+The same is also available as:
+
+```
+npm run start:live
+```
+
 This requires NPM 2.0.
 
 ## Working on the backend
@@ -91,7 +97,7 @@ little more complicated.
     ./target/server
 
     # In another window run the ember-cli server
-    ember server --proxy http://localhost:8888/
+    npm run start:local
     ```
 
 ## Running Tests

package.json

@@ -7,9 +7,11 @@
     "test": "tests"
   },
   "scripts": {
-    "start": "ember server",
-    "start:ui": "ember server --proxy https://staging-crates-io.herokuapp.com",
     "build": "ember build",
+    "start": "ember server",
+    "start:local": "ember server --proxy http://127.0.0.1:8888",
+    "start:staging": "ember server --proxy https://staging-crates-io.herokuapp.com",
+    "start:live": "ember server --proxy https://crates.io",
     "test": "ember test"
   },
   "repository": "",