Merge pull request #2 from dgleich/master

Working accuracy figures and more
Initial runtime plots -- not so good for us
Added more outputs and fixed small new bug with residual
Fix for kmatexp
Updated tol experiments for new kmatexp
New functions to test the accuracy as a function of steps
Updated and new figures
Added flickr
New accuracy and order experiments
Updated runtime plot
Error plot
Missing runtime data
Final codes and figures
Final commits for paper
Updated readme
final tweaks for paper figure
Updated readme
correcting some errors for making code public
gexpmq rewritten as gsqres_mex: now includes psi-weights (from our kdd paper) and uses maps instead of arrays
Merge https://github.com/kkloste/nexpokit

pdating code for new journal version