Automatically initalize eb command if it's checked out locally.
Previously, rbenv would only be initialized if it was already in your path. That's dumb, because the initializer puts it in your path. Fixed.
Missing a space. A stupid fucking space because bash is the worst.
Merge pull request #3 from expectedbehavior/eb-auto-init

Automatically initalize eb command if it's checked out locally. Incidentally, made a fix to how we include rbenv.