WIP: Pull request for a new design and bloging engine

**do not merge**

to preview the site write in terminal `rake preview` and navigate to [http://localhost:4000/](http://localhost:4000/)

@adamrneary You will be interested in:
- [Home page](http://localhost:4000/)
- [Post page](http://localhost:4000/blog/2013/04/04/pageguide/)
- [Category index](http://localhost:4000/blog/categories/engineering)
- [Style guide](http://localhost:4000/colophon/)
- [Global SASS variables](https://github.com/adamrneary/adamrneary_com/blob/new/sass/globals/_variables.scss)