suggestions of improvements for the main docs
shell-script that helps previewing the sphinx documentation
fixed mesg for required package in shell script
improved Install and Usage sections, added Dependencies section, preparing for README cleanup
cleanup in README.md, moved todo list to TODO.md, removed stuff already in main docs, beefed up intro text a little bit
revision of the menu structure, and minor edits
added wiki link in online resources section
Merge pull request #10 from eliasdorneles/improving-docs-proposal

Documentation improvements