Revert "Fixed #10 Angular version dependency"

This reverts commit d4faba3c366a920896dc878bd2f84e0504ac61e1 that both referenced the wrong issue number (should be #9) and broke the build (epic commit fail).
Reduced required version of Angular to ~1.2.15

Changed angular, angular-mocks, and angular-scenario required versions.  This resolves #9 and fixing bower install issue.