doc(overview): add link to angular demo slides to overview
docs(Angular.js): fix typo
docs(rootScope): Fix various typos
docs(rootScope): fix typo
docs(tutorial): testacular renamed to karma

Replaced instances of 'Testacular' with 'Karma' to reflect name change of test runner.
Replaced instances of 'http://vojtajina.github.com/testacular' with 'http://karma-runner.github.io/' to reflect dedicated page for Karma Test Runner.
Added location of config file needed to start the Karma server. This is still labeled 'testacular.conf.js' and needs file name to be updated in the phone example repo.
fix($location): fix URL interception in hash-bang mode

Closes #1051
fix(Grunt): also remove \r chars when joining files
fix(ngClass): should remove classes when object is the same but property has changed

If you wire up ngClass directly to an object on the scope, e.g. ng-class="myClasses",
where scope.myClasses = { 'classA': true, 'classB': false },
there was a bug that changing scope.myClasses.classA = false, was not being picked
up and classA was not being removed from the element's CSS classes.

This fix uses angular.equals for the comparison and ensures that oldVal is a copy of
(rather than a reference to) the newVal.
docs($q): fix incorrect @returns tag for $q.when()
docs(guide.unit-testing): fix typo
fix(ngPattern): allow modifiers on inline ng-pattern

Add support for regex modifiers on inline `ng-pattern`.
`ng-pattern="/regex/i"` now validates correctly.

Closes #1437
Added  method to promise object.