Updated angular dependencies

Author: Mayur Patel

package.json

@@ -26,13 +26,13 @@
   },
   "homepage": "https://github.com/Paldom/angular2-rest#readme",
   "dependencies": {
-    "@angular/core": "2.0.0",
-    "@angular/http": "2.0.0",
+    "@angular/core": "2.0.0-rc.4",
+    "@angular/http": "2.0.0-rc.4",
     "es6-promise": "^3.2.1",
     "es6-shim": "^0.35.1",
     "reflect-metadata": "^0.1.3",
-    "rxjs": "5.0.0-beta.12",
-    "zone.js": "0.6.21"
+    "rxjs": "^5.0.0-beta.10",
+    "zone.js": "^0.6.12"
   },
   "devDependencies": {
     "gulp": "^3.9.0",