docs(ngView): fix code example (change template to templateUrl)

Closes #1715
feat(directive): ng:keydown, ng:keyup

New directives for binding to keydown and keyup events.

Closes #1035
docs(directive): old syntax
feat(limitTo): limitTo filter accepts strings

This allows strings to be filtered by limitTo, using the same methods

Closes #653
docs(guide): minor English corrections to the Directive guide
docs(anchorScroll): correct word "location"
feat($timeout-mock): add verifyNoPendingTasks method

added verifyNoPendingTasks method, which throws error if not all
deferred tasks have been flushed

Closes #1245
docs(guide): change example controller to properly call greet method on greeter