Release 3.0.2
quick design revamp
Update links in doucmentation to reflect new urls
Add TemplateVars class

Start extracting out the use of templates into its own class to cleanup
the response code.
Switch the erb template usage to use the new TemplateVars
remove rubygems requires
Merge branch 'design_prettification' of git://github.com/brianflanagan/heel into brianflanagan-design_prettification

Merge Brian's design in with the changes for templates.
Update dependencies to latest versions
Allow for multiple heels running on different ports

Remove the assumption that a person would only run one instance of heel
at a time. Now each instance of heel running stores its pid in a file
that has the port number in the filename.

This allows for multiple heels to run simultanesouly on different ports.

Closes #9
Prepare for release.