fix instances of it's to its for proper grammar
Merge pull request #1022 from hswolff/grammar-fixes

fix instances of it's to its for proper grammar
Correct more grammar.
Clean up `Backbone.Events`.

* Refactor `Backbone.Events` for increased clarity.
* Update documentation to include multiple events.
* Use `event` consistently throughout.
Merge pull request #1023 from braddunbar/events

Clean up `Backbone.Events`.
Use local references to `Model`, `View`, etc.
Merge pull request #1024 from braddunbar/locals

Use local references to `Model`, `View`, etc.
Fixes #1038 - Document changes to `view.$`.
Added ability to avoid an additional '$()' call in 'setElement' method if current 'element' is already wrapped with '$()'
Merge pull request #1040 from braddunbar/$-docs

Fixes #1038 - Document changes to `view.$`.
Made Backbone.sync options parameter optional
Merge pull request #1052 from Sid3Show/master

Fix to make Backbone.sync options parameter optional again
fixing or= JS style for sync options.
Merge pull request #1048 from marat-dreizin/master

Added ability to avoid an additional '$()' call in 'setElement' method if current 'element' is already wrapped with '$()'
Add a test for #1052.
Add test for #1048.
merging in hash fixer for FF
Merge branch 'master' of github.com:documentcloud/backbone
removing a test that is invalid in IE.
adding additional router test