add some code in visualization
Merge branch 'master' of https://github.com/leituo56/SocialNetworkArtist_CMPE272_Group6
resolve conflict
Merge branch 'sammie_visualization'
Merge branch 'master' of https://github.com/leituo56/SocialNetworkArtist_CMPE272_Group6
Merge branch 'master' of https://github.com/leituo56/SocialNetworkArtist_CMPE272_Group6
Merge branch 'master' of https://github.com/leituo56/SocialNetworkArtist_CMPE272_Group6
Merge branch 'master' of https://github.com/leituo56/SocialNetworkArtist_CMPE272_Group6
update visual files
Merge pull request #68 from leituo56/sammie_visualization

update visual files
Test: add bar chart in
Merge pull request #69 from leituo56/sammie_visualization

Test: add bar chart in
Merge branch 'master' of https://github.com/leituo56/SocialNetworkArtist_CMPE272_Group6
Merge pull request #70 from leituo56/dev_jenn2

h4 fixes, wording changes