Add git-ignore tool for creating .gitignore
Add git-ignore tool for creating .gitignore

Wraps the git ignore tool from gitignore.io. provides easy way to echo
out multiple gitignores commonly used. You can add them to the ignore
file by `git-ignore java ruby python` >> .gitignore

hackers-of-umass/utility-belt,hackers-of-umass/utility-belt