added sample files for second homework
Merge branch 'master' of github.com:jhofman/css2013
added comments
renamed adjacency list
added sample files for second problem
homework 2 readme
typo
problem subdirs
user eccentricity example in pig
problem subdir
added id for subset of targets in edges sample
note to README
Merge branch 'master' of git://github.com/jhofman/css2013