feat(build): rename .angular-cli.json and refactor (#1736)

angular-cli.json renamed to .angular-cli.json as per ng-cli changelog for rc.0.  Changed references in dependent files.

demo/src/environments/environment.ts

@@ -1,7 +1,7 @@
 // The file contents for the current environment will overwrite these during build.
 // The build system defaults to the dev environment which uses `environment.ts`, but if you do
 // `ng build --env=prod` then `environment.prod.ts` will be used instead.
-// The list of which env maps to which file can be found in `angular-cli.json`.
+// The list of which env maps to which file can be found in `.angular-cli.json`.
 
 export const environment = {
   production: false

docs/getting-started/ng-cli.md

@@ -32,7 +32,7 @@ import { AlertModule } from 'ng2-bootstrap';
 })
 ```
 
-- open `angular-cli.json` and insert a new entry into the styles array 
+- open `.angular-cli.json` and insert a new entry into the styles array 
 
 ```json
       "styles": [

karma.conf.js

@@ -26,7 +26,7 @@ module.exports = function (config) {
       }
     },
     angularCli: {
-      config: './angular-cli.json',
+      config: './.angular-cli.json',
       environment: 'dev'
     },
     reporters: config.angularCli && config.angularCli.codeCoverage