Bower.json changes

Hey guys, this is regarding the issue being discussed in #52 [to secure the upload.php].

I added the examples directory to be ignored in bower.json. This way it is not installed under bower_components/ when a user adds angular-file-upload through bower install.
Documentation for Bower ignore  here: http://bower.io/#defining-a-package


I also updated AngularJS dependency to current version (**Angular 1.2.11**) instead of the release candidate.
Let me know if you would prefer the version change be reverted. 
I am currently using angular-file-upload with version 1.2.* for another app, and it is working great, but I am not using all the features.

Current angular version seen here: https://github.com/angular/angular.js/blob/master/CHANGELOG.md