Adding exercises from the Software Carpentry 4.0 website
Moved exercises into subfolders of the corresponding topics
Merge pull request #34 from pipitone/swc_exercises

Exercises from the Software Carpentry 4.0 website
Copied Hints&Tips from Manchester branch
Added cygwin instructions
Fixed typo
Update Setup.md
Updated Ubuntu setup
Rewording
Rewording
Update Setup.md
Update Setup.md
Update Setup.md
Update Setup.md
Added cygwin instructions
Merge pull request #75 from apawlik/2013-05-krakow

Revised setup instructions-added cygwin for Win
Fixed typos
Merge pull request #76 from apawlik/2013-05-krakow

Fixed typos in the Setup instructions
Update Setup.md

Removed extra square bracket from Cygwin link.
Created director for Make material