docs($anchorScroll): provide an example of basic usage.

Per a request made by Peter Bacon Darwin here:  http://www.benlesh.com/2013/02/angular-js-scrolling-to-element-by-id.html?showComment=1370941217879#c8718313084813008967
docs(): parameter for html5Mode is boolean
docs(bootstrap.ngdoc): clarify bootstrap example

Clear up confusion about module declaration when using manual bootstrap.
docs(angular.bootstrap): clarify modules parameter

It was not clear what you could pass to specify modules to load in the
`module` parameter of this function. The `modules` parameter takes an
array.

The main case is to provide a String, which is the name of a "predefined"
angular module.
The side cases are to provide a Function (or an annotated function in the
form of an Array), which will be invoked by the injector as a run block.

It is not possible to "define" new modules via this parameter.

Closes #3692
docs(css_styling_guide): add ng-scope and ng-binding classes

I noticed angular was adding these css classes to elements and believe they
should be listed in the documentation at this page. The ng-scope class is
mentioned in the developer guide, hence the link there, and the ng-binding
class is not mentioned anywhere else in the documentation or the guide that
I found.

Closes #3728
docs(booleanAttrs): improve parameter docs for boolean attributes

Closes #3724
docs(tutorial): clarify use of inject() in step 9

Closes #3718
docs(tutorial): fix markup for tutorial_04.png diagram
docs(tutorial): fix markup for tutorial_03.png diagram

Closes #3707
docs(mock.inject): document underscore wrapping syntax

Add a summary describing the ignored underscore syntax sugar helper,
with a simple use case example.

Closes #3621
refactor($animate): use CSS3 transition/animation events instead of $timeouts to track ongoing animations

Closes #3629
Closes #3874
fix(ngScenario): provide event parameters as object

BREAKING CHANGE: browserTrigger now uses an eventData object instead of direct parameters for mouse events.
To migrate, place the `keys`,`x` and `y` parameters inside of an object and place that as the third parameter
for the browserTrigger function.
fix(ngAnimate): check elapsedTime on current event

onAnimationProgress now checks the event's elapsedTime property before
checking the originalEvent.elapsedTime property.
Use browserTrigger with elapsedTime parameter to trigger animation events
fix(browserTrigger): do not use document.createEvent method

Firefox 23 has deprecated the use of createEvent for transition and
animation events.  We must now use `new TransitionEvent()` and
`new AnimationEvent()` if they are available.

But of course IE doesn't support this format correctly so we must wrap
the attempt in a try block and revert to document.createEvent if necessary..
docs(mock.inject): fix typo
docs(README): add dashboard link

Closes #3934
docs(forms.ngdoc): fix spacing in example

Closes #3930
docs(angular.copy): clarify corner cases

The behaviour when null or undefined was passed was not clear.
The exception thrown when source == destination was not documented.

Closes #3946
docs($q): clarify what happens when rejected

Closes #3943
docs(Attributes): add missing documentation for $observe method

- Add proper ngdoc annotations to existing $observe documentation
- Add link to directive guide for usage example of $observe
- Add note about $observe function parameter signature

Closes #3957