Create pastebin.babel

I noticed that your projects don't have any .babel files so as an incentive I decided to send you a pull request with one :)

If you don't know about babel then take a look [here](https://github.com/nimrod-code/babel#babel). After you pull this you'll be able to install this library using babel by running ``babel install``, and if you submit it to babel's [packages](https://github.com/nimrod-code/packages) repo other users will be able to install it via ``babel install pastebin``.