Align tables using dhruvasagar/vim-table-mode

This little PR just makes Markdown tables look nice. Doesn't change anything in the HTML output. I used [vim-table-mode](https://github.com/dhruvasagar/vim-table-mode) to automate the process.

Sublime Text 2 users should see [SublimeTableEditor](https://github.com/vkocubinsky/SublimeTableEditor).