fix(build): ngrx-store-freeze is a dependency also in production (#39)

As other dev tools like *ngrx-store-logger* and *@ngrx/store-log-monitor*, *ngrx-store-freeze* is imported and referenced in code whether its a development or production environment. Hence it seems correct to list that under *dependencies* with the others, as opposed to *devDependencies*.

Author: BrainCrumbz

README.md

@@ -11,6 +11,7 @@ This app is a book collection manager. Using the Google Books API, the user can
  - [ngrx/db](https://github.com/ngrx/db) - RxJS powered IndexedDB for Angular2 apps
  - [ngrx/store-devtools](https://github.com/ngrx/store-devtools) - Instrumentation for @ngrx/store enabling time-travel debugging
  - [ngrx/store-log-monitor](https://github.com/ngrx/store-log-monitor) - A port of redux-devtools-log-monitor for Angular 2 and @ngrx/store
+ - [codewareio/ngrx-store-freeze](https://github.com/codewareio/ngrx-store-freeze) - A @ngrx/store meta reducer that prevents state from being mutated
 
 ### Quick start
 

package.json

@@ -50,6 +50,7 @@
     "@ngrx/store-devtools": "^2.0.0-beta.1",
     "@ngrx/store-log-monitor": "^2.0.0-beta.1",
     "core-js": "^2.2.2",
+    "ngrx-store-freeze": "^0.1.0",
     "ngrx-store-logger": "^0.1.4",
     "normalize.css": "^4.1.1",
     "rxjs": "5.0.0-beta.6",
@@ -83,7 +84,6 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-typescript-preprocessor": "0.0.21",
     "karma-webpack": "^1.7.0",
-    "ngrx-store-freeze": "^0.1.0",
     "promise-loader": "^1.0.0",
     "raw-loader": "0.5.1",
     "source-map-loader": "^0.1.5",