- update core system

Author: ecarriou

README.md

@@ -79,8 +79,10 @@ Just call *install* API to install and start your app:
 // require System Runtime
 var runtime = require('system-runtime');
 
-// install and start your app
-runtime.install('app.json');
+// install 
+var appId = runtime.install('app.json');
+// start
+runtime.start(appId);
 ```
 
 #### Component APIs

build/system/system.js

@@ -825,7 +825,7 @@ var system = {
                     "name": "autoStart",
                     "type": "boolean",
                     "mandatory": false,
-                    "default": true
+                    "default": false
                 }, {
                     "name": "async",
                     "type": "boolean",

build/sytem-runtime.json

@@ -943,7 +943,7 @@
 						"name": "autoStart",
 						"type": "boolean",
 						"mandatory": false,
-						"default": true
+						"default": false
 					},
 					{
 						"name": "async",