Add insertBefore on Raphael Sets to correspond to specs.
Tests for insertBefore
Update README.md

Add use element and r2d3 script placement to limitation.s
Added vim stuff to .gitignore.
Add item to Set items array when added with appendChild.
Fix set.insertBefore.
Fix insertBefore tests.
Built files.
Merge pull request #51 from cronco/raphaelSetInsertBefore

Add insertBefore on Raphael Sets to correspond to specs.
Update README.md

Added missing word 'in'.
Merge pull request #53 from joeandaverde/master

I added a missing word to the readme. <3
Return empty object if no currentStyle exists on the element. Closes #52
correct IE versions in readme
Merge pull request #54 from callumlocke/patch-1

correct IE versions in readme
Added d3 examples folder and allow class names to be added to groups.
Merge branch 'master' of github.com:mhemesath/r2d3
Add parentNode to created element so it can be removed. Closes #58
Add parent node to element so it can be removed. Closes #59
Default line element values to 0 to match SVG defaults. Closes #44
Update README.md

Add "Who's using R2D3" section.