syncing local files to the repo I made for them
changed notes on ex3sd3.py, fixed problem with github:mac

http://stackoverflow.com/questions/13661354/github-for-mac-error-git-cre
dential-osxkeychain-is-not-a-git-command
Merge branch 'master' of https://github.com/rajsandhu/lpthw
test

testy