Add methods:
--> calculate total project time
--> calculate time at first commit
--> time at last commit
--> build array of all commit times for a file path, and a nested array of additions and deletions
Merge pull request #106 from alexung/fetch_utc_commits

Add methods:
Merge branch 'master' of https://github.com/alexung/hotspot into alex_contributors_filepath
Merge pull request #108 from alexung/alex_contributors_filepath

Link broken into 2 parts for user navigation
restyled the navigation
Merge branch 'master' of https://github.com/alexung/hotspot into design_branch
Merge pull request #109 from alexung/design_branch

Design branch
Merge branch 'master' of https://github.com/alexung/hotspot into alex_contributors_filepath
sort added on commits and users show