docs(angular.equals): fix simple typo

- JavasScript -> Javascript

Closes #4323
fix(ngTouch): add $event to ng-swipe

Existing documentation implies that an Event object should be available
as `$event` on swipe directives, which previously was only working for
`ng-click`.

Closes #4071
Closes #4321
Merge branch 'master' of https://github.com/angular/angular.js
componentizd!