Change gem source to https.
Using Vagrant for development.
Add therubyracer as javascript runtime.
Foward the default Middleman server port.
Update bundle.
Update gitignore.
Use host-only network.
Foward default Middleman server port and livereload port.
Use nfs for shared folders, instead of virtualbox.
Add updates from Vagrant integration.
Add 'Requiements' and 'How to Start' sections to README.
Add timezone to configuration.
New article: 'Progres on the Build Script'
Merge branch 'develop' into source

- Fix for middleman-blog timezone issue.
- New article.