chore(Example): Pin @angular/cli to 1.2.x to fix paths usage (#514)

Author: brandonroberts

package.json

@@ -56,7 +56,7 @@
   },
   "devDependencies": {
     "@angular/animations": "^4.2.0",
-    "@angular/cli": "^1.2.0",
+    "@angular/cli": "~1.2.0",
     "@angular/common": "^4.2.0",
     "@angular/compiler": "^4.2.0",
     "@angular/compiler-cli": "^4.2.0",