Merge pull request #1 from Bubblings/master

add cssmin doc
added Gruntfile and defined tasks.
added template folders to make all the plugins with same struture
Add Submodule into version control
add some notes about how to add plugin to this repo
move reademe/grunt-contrib-cssmin-v0.7.0.md to grunt-contrib-cssmin/README.md
Add Submodule into version control
move reademe/grunt-contrib-jshint-v0.8.0.md to grunt-contrib-jshint/README.md
delete the readme folder
Merge pull request #2 from qivhou/master

Added Gruntfile.js, template  and defined tasks to make the standard structure for all the added plugins.