cli: bump dev dependencies to 0.13.0-beta

external/amber-cli/package.json

@@ -36,8 +36,8 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "dependencies": {
-    "amber": "^0.13",
-    "grunt-init-amber": "^0.13.0",
+    "amber": "^0.13.0-beta",
+    "grunt-init-amber": "^0.13.0-beta",
     "grunt-init": "^0.3.1",
     "bower": "^1.3.9",
     "amber-dev": "^0.2.2",