Create templateCacheHtml.js && Use gulp-angular-templatecache

* gulp-ng-html2js is blacklisted by GulpJS
* Concat all html in a single js file. Fix #90
* This js file is store in src/app/templateCacheHtml.js
Move templateCacheHtml.js into .tmp/inject/
Merge pull request #136 from eleven-labs/angular-template-cache

Create templateCacheHtml.js && Use gulp-angular-templatecache