Added example code for challenge 1 (fence.py)
Added string reversal example code
Added fast string reversal example code
Added iPython notebooks of Software Carpentry Python lessons
Added example code for some of the challenges in the Python lessons
Added comments to Python example solutions
Added further documentation
Sample analysis automated using Make
Merge branch 'master' of https://github.com/hpcarcher/2014-12-03-edinburgh-students
upstream merge: new .pys added