Merge pull request #180 from djfarrelly/master

Upgraded to Grunt 0.4.0 and added Safari for Mac bug fix.
add idea files to gitignore
Merge branch 'develop' of github.com:niklasvh/html2canvas into develop
 - Fetch images of current element only
 - Fixed rendering of ExtJS 4.2 windows.
Merge pull request #188 from felfert/master

Fetch images of current element only
 - Fix parsing of input fields on IE9
Merge pull request #189 from felfert/master

Fixed parsing of generic INPUT elements on IE9
added test for zIndex -1 element used as background
Merge pull request #190 from cobexer/zIndex-1

added test for zIndex -1 element used as background
Fixed #207
Merge pull request #214 from felfert/master

Fixed #207
update download link
fix typo
Checking that text node range has property 'getBoundingClientRect' before calling it.