The Documentation improvements that I was suggesting

The goal of my edits was to create layers to the documentation so that there was little overlap, it is clear which part of the documentation (including the main Readme) discusses what and those issues are not discussed anywhere else. So its much more tree-like.

The main changes are:

1. Everything about how to install, configure, use and develop is now centered on the documentation page.
2. The core documentation applies to users primarily, and the file layout documentation is the only place where development level documentation is discussed. 
3. The main page is all about advertising and core links

This pull request is more of a way to "complain better", and illustrate the changes I was interested in seeing rather than just talk about them. I have not attachment here. Feel free to accept the pull and change stuff substantially, or ignore the pull request and merely take a look at what I was suggesting for future improvements on the documentation.

Thanks for making my life easier with your project!

-FT