Merge pull request #53 from njvack/2014-08-04-Davidson

Fix paste instructions for Mac in iPython tutorial
Fix grammar and clarify git revert function behavior.
Updated branch name for first clone of repo

Will still need an updated location on day of camp.
Bold q to identify it as input that the student is supposed to type.
Remove -a flag from first commit so we only commit the README.md file
and change output to match my expected output
Add a link to the wikipedia article comparing version control systems.
Updated tutorial location to this camps branch
removed ls -F discussion; not needed for this server
Clarity and proofreading checks
removed "Bonus" distinction for "find"
removed "Bonus" distinction for "find"
added description for 'set' on this server
Clarified arguments to shell scripts
removed "Bonus" distinction for script loops, updated end
Explicitly add text to the README.md when we create it
Merge pull request #54 from kliph/cliff-git-local-changes

Cliff git local changes
Updated location for initial clone of repo

cloning from Paul's labuser04 home directory
Removed 'find' exercise #4 and Bonus Challenge

these are both too difficult to do, even with extensive study of the 'man' page for 'find'
clarifying need for 'find' in Exercises
removed #4 'find' exercise and Bonus Challenge

these are not intuitive
clarified 'find' exercise descriptions