Use spaces for line spacing

[jkingsman]

Although often a cantankerous issue (I can't believe I'm making an unironic issue with the title), spaces have tended to give more flexibility to the end user and would bring index.coffee into full compliance with coffeelint spec.

For branches, I have one that will go right into Master, and another that is based off the changes in #8 so the merge isn't a PITA). If you're okay with changing the spacing, let me know if you plan to merge in the linting or not and I'll open a PR with the appropriate base.