Run:
% ruby getgitdata.rb
% ruby cleanrepos.rb 
% ruby parserepos.rb
% ruby cleancollabs.rb 
% ruby parsecommits.rb
% ruby buildgraph.rb

getgitdata.rb:
# given a list of user names
# grab each of their list of repos in github
# *** *** makes github call with personal info (username and password) *** ***
# dump output into individual json files
# generates repos-*.json files

cleanrepos.rb
# removes the header 23 lines from the extracted repo files
# generates clean-repos-*.json files

parserepos.rb:
# opens each of the repo files in the directory
# for each repo file, grab each of their list of commits
# *** *** makes github call with personal info (username and password) *** ***
# dump output into individual json files
# generates collabs-*.json files

cleancollabs.rb
# removes the header 24 or 25 lines from the extracted collab files
# generates clean-collabs-*.json files

parsecommits.rb:
# opens each of the commit (collab) files in the directory
# for each commit file, grab each of their list of committer logins 
# dump the output into a single file 
# generates listcollabs.txt file

buildgraph.rb:
# parse info from listcollabs.txt into a 2d jagged array
# generate graphcollabs.dot file for visualization
# requires the graph gem to work properly to generate the png files
# to install:
#    sudo gem install graph
# can try to install graphviz as instructed here http://www.rubydoc.info/gems/graph/2.8.1
# otherwise, use online tool at http://www.webgraphviz.com/