Factor out some duplication
Reduce response duplication
Fix README formatting
Add support for etags
Merge pull request #9 from jonallured/etags

Add support for Etags

@jonallured This is awesome!
I just tested it and works like a charm... and just as you mention in the updated `README`, as it supports Gzip now by passing the corresponding header.. I'm thinking on making it the default header to send... response speed is better when passing this option.
:smile: