Fixed more typos in README.md
Added directory tracking.
* changed the results returned from walkLocal and walkRemote
* file lists now use an object containing lists for both files and dirs
Added directory support to consolidate()
Added mkdir support to commit()
Added rmdir support to commit()
Implemented mkdir()
Implemented rmdir()
Updated some comments and .gitignore
Added remove()
Fixed small rmdir bug.
* dirs need to be deleted in LIFO order
Updated design notes
Documentation update