Merge pull request #4 from jhnns/master

update less version and version bump 0.6.x
fixed changed api
Update README.md
Update README.md
fixes webpack/webpack#126
fixes webpack/webpack#146
0.7.0
fixed a bug where url() statements in less modules were not correctly resolved
0.7.1
Merge pull request #5 from jhnns/fix-wrong-context

Fixed a bug where url() statements in less modules were not correctly resolved
Update README.md
Less strict less version, injectable as peer dependency

fixes #6