test(TravisCI): add continuous integration tests on Angular 1.2 and 1.3

Closes #3
feat(hint-interpolation): Allow simple expressions without a dot to be evaluated (credit: @mterwoord), closes #4
chore(*) make small changes
Merge branch 'master' of github.com:angular/angular-hint-interpolation
Merge branch 'master' of github.com:caguillen214/interpolating-interpolator