Grunt plugin init
Import initial task work
Most of the work - (nvmUse does not work)
Work on nvmUse() and nvmInstall()
Added prompt for install
Switched from `.` to `source` and made nvmPath option
Added grunt-exec dependancy, hoping to extend this
Extended grunt-exec
Added warning if plugin cant find NVM
Added documentation, removed option to install without prompting
Merge branch 'develop'