updates task implementation to 0.4 grunt spec
removes binary since grunt 0.4 doesn't specify a supported way to do it
project supports development with grunt ~0.4.1
updates readme and package.json
fixes issues with double quotes
Merge pull request #2 from aoberoi/master

Adds support for grunt ~0.4.1
Merge pull request #4 from aoberoi/double-quotes

fixes issues with double quotes