added files for testing lesson
Removed 'next steps'
commented NaN lines in test
fixes after reviewe for 04-cond.md
Minor fixes to 03-func and 04-cond
times for shell, python, git, sql
only keep n,median; remove mean,min,max
Rough slides, missing phd comics image
Good enough git slides to share?
Uploaded lesson on reading and writing .csv, including exploration of arguments in the functions
Added edited lessons on HDF5 after reviewer comments
Updates to lesson and associated files
Merge branch 'master' of https://github.com/swcarpentry/bc into matlab-05-defensive

Conflicts:
	novice/matlab/02-loop.md
	novice/matlab/03-func.md
	novice/matlab/04-cond.md
fixed duplicate output
working on a python pitch
ipython image
python pitch, cribbed from sritchie73's R motivational slides
typos
re-organized alternatives
put image in the correct place