start cleaning up readme
move roadmap to doc subfolder
start usage guide
move old stuff, mode cleaning up
add link to 2.5 pull requests
minor wording correction
Merge branch 'master' into features/documentation_cleanup
document custom model generator
add link to generators documentation
fix path to generators guide
update generator doc
dummy commit for hipchat integration testing
add note about generator specs
split up readme
clean up readme, get rid of generators doc
move roadmap to wiki
add image from logo
fix path to logo
remove docs folder, all in wiki now
add wiki as submodule