Use grunt-init-amber from npm.

external/amber-cli/package.json

@@ -37,7 +37,7 @@
   },
   "dependencies": {
     "amber": "~0.12.4",
-    "grunt-init-amber": "git://github.com/amber-smalltalk/grunt-init-amber.git",
+    "grunt-init-amber": "0.0.1",
     "grunt-init": "~0.3.1",
     "bower": "~1.3.2",
     "amber-dev": "0.0.3"