Update dependencies

Author: kamil.mysliwiec

package.json

@@ -46,11 +46,11 @@
   "author": "Kamil Mysliwiec",
   "license": "MIT",
   "dependencies": {
-    "@nestjs/common": "2.0.2",
-    "@nestjs/core": "2.0.2",
-    "@nestjs/microservices": "2.0.3",
+    "@nestjs/common": "*@beta",
+    "@nestjs/core": "*@beta",
+    "@nestjs/microservices": "*@beta",
     "@nestjs/testing": "2.0.2",
-    "@nestjs/websockets": "2.0.2",
+    "@nestjs/websockets": "*@beta",
     "cli-color": "^1.1.0",
     "express": "^4.14.0",
     "iterare": "0.0.8",