chores(gitignore): ignore .idea
feat(prompt): add option to choose angular bootstrap project.

inject module dependency and css recommendation by angular ui bootstrap project.

test that it works easily by adding the following to main.html:

<button class="btn btn-default" ng-click="isCollapsed = !isCollapsed">Toggle collapse</button>
<hr>
<div collapse="isCollapsed">
	<div class="well well-lg">Some content</div>
</div>

This will add a button that when click will collapse the accompanying div alongside with a nice transition effect.