Add a detailed how to build version.

with git and node download url, git clone command, grunt-cli install and
bower use without previous global install.
convert eco template to jade template

remove docpad-plugin-eco dependency
Add some usefull docpad plugin and some needed plugin for TDD stack.
Merge pull request #2 from GammaNu/source

Add a detailed how to build version.
Add `jade` support
Add TDD tools