chore(): use local node modules for jspm (#155)

* Rather than forcing the user to install a JSPM binary with NPMg lobally, we should add JSPM as a dev-dependency. This ensures that each user has the *same* environment and same conditions. * Notice that JSPM will automatically install the packages when running `npm install`, because it's listed in the `postinstall` script.

Author: devversion

README.md

@@ -109,12 +109,10 @@ installed.
 Clone this repository and execute the following commands in a terminal:
 
 * `git checkout master`
-* `npm install jspm live-server -g`
-* `jspm update`
-* `live-server --open=app`
+* `npm install`
+* `npm run serve`
 
-> **Note:** You should use a web-server (like live-server above) to view your app in the browser. Open
- the dev console to see any warnings and browse the elements.
+> **Note:** Open the dev console to see any warnings and browse the elements.
 
 ###### Layout
 

package.json

@@ -28,9 +28,11 @@
  }
  },
  "devDependencies": {
+ "jspm": "^0.16.46",
  "live-server": "^0.9.2"
  },
  "scripts": {
- "postinstall": "jspm install"
+ "postinstall": "jspm install",
+ "serve": "live-server ./app"
  }
 }