Updating usage documentation

Updating the readme to show how to use helper-lib inside another node application.
Removing the part where you can register it as a grunt task, since this isn't a grunt task.

Also, I'm not sure why, but all the line endings updated too. I have the .gitattributes file in my path so they should be matching the repo. If anyone has an idea to why those keep changing, let me know so I can fix it.