Add __init__.py to example project.
Add __init__.py to example project.

I'm not sure how I was running the example without this. Probably an
errant pyc file on my other machine.

jgruhl/djtokeninput,jgruhl/djtokeninput,adammck/djtokeninput,jgruhl/djtokeninput,adammck/djtokeninput,adammck/djtokeninput