chore(package.json): rename "angular2-" as "angular-" in name (#2558)

also ignore a2docs.css

public/docs/_examples/.gitignore

@@ -9,7 +9,6 @@ tsconfig.json
 tslint.json
 typings.json
 wallaby.js
-_boilerplate/a2docs.css
 
 _test-output
 **/ts/**/*.js
@@ -19,3 +18,4 @@ _test-output
 !**/*e2e-spec.js
 !systemjs.config.1.js
 !_boilerplate/*
+_boilerplate/a2docs.css

public/docs/_examples/_boilerplate/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "angular2-examples",
+  "name": "angular-examples",
   "version": "1.0.0",
   "description": "Example package.json, only contains needed scripts for examples. See _examples/package.json for master package.json.",
   "scripts": {

public/docs/_examples/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "angular2-examples-master",
+  "name": "angular-examples-master",
   "version": "1.0.0",
   "description": "Master package.json, the superset of all dependencies for all of the _example package.json files. See _boilerplate/package.json for example npm scripts.",
   "scripts": {