Add some usage examples to doc strings.
include keyword arg in the doc string example.
include keyword arg in the doc string example.

added more clarifications on exception classes
added example documentation to ActionChains
change to a non-reserved word to get python IDE to stop complaining.
revert these 2 files.
Added doc strings to ActionChains and WebElement
Add support for using 'with' block pattern with Action chains and Touch actions.

Ex:
with ActionChains(driver) as c:
  c.move_to_element(menu)
  c.move_to_element(submenu)
  c.click(submenu)
  c.perform()
Fix spelling and corrected comment.
Change desired properties into class properties that return clones to avoid global alterations.
adding tasks for compiling atoms for ios-driver

Conflicts:
	Rakefile
* All js_fragment definitions based on atoms code belong in
//javascript/atoms/fragments/build.desc

* Removed redundant js_fragment rules.
fixing ios_driver atoms build target, removing the ones that don't work anymore and aren't being used in that project
fixing up the ios_driver target completely
re-adding the is_displayed fragment, shouldn't have removed it!
Implementing FindsByClassName in HtmlUnitDriver using CSS instead of XPath
Throwing an error with the proper code on empty class name
Fixing element finding tests
Ignoring failed tests
Fixing HtmlUnitDriver to pass element finding tests