Build site on deploy

* Add Ruby 2.0 to Gemfile
* Add rake-pipline to trigger the assets:precompile
* Add Unicorn web server
* Add Procfile for Heroku deploys

Minor changes:

* Add gitignore file
* Add config.rb so Middleman can build
* Add sample index page
Merge pull request #4 from harlow/hw-unicorn-as-web-server

Get deploy running on Heorku
drop unicorn for puma

unicorn can only serve one request per process, while puma can serve
many more, and defaults to 16
don't need rake-pipeline, just rake
silence i18n deprecation
ruby 2.1
Add License
Merge pull request #6 from rossjourdain/patch-3

Add License
Merge branch 'master' of http://github.com/indirect/middleman-heroku-static-app

Conflicts:
	.gitignore
	Gemfile
	Gemfile.lock
	README.md
	config.rb