spajus/gosu-tiled

Before you make a pull request:

- Make sure your code is formatted using [this ruby style guide](https://github.com/bbatsov/ruby-style-guide)
- Trim all trailing whitespace
- Run `rspec` to see if all old tests pass
- Add new tests for your code
- Consult [betterspecs.org](http://betterspecs.org/) when writing new tests