Fixes for gzipping, htmlmin and Amazon uploading

* Fixed gzip generation, it's now run with ```gulp publish``` and not in
a separate task, this fixes uploading with Rsync where it would gzip
previously gzipped every time you'd run the ```gulp deploy``` command.
This fixes #62.
* Minor fixes for the gulpfile and index.js file
* Added a default region to the aws-credentials.json for Cloudfront
0.6.0 Release