Docs code examples update

Added the new `cd "$(dirname "$0")"` line in the command example. Added the cssmin, bower, and autoprefixer tasks to the grunt example.
Merge pull request #33 from noahbass/docs_update

Docs code examples update
Update package.json with grunt-bower version

grunt-bower has been updated with css and multiple file support: https://github.com/curist/grunt-bower#change-logs
Merge pull request #34 from noahbass/patch-1

Update package.json with grunt-bower version