Add server.js to mimic response from Github API
Remove default ViewController
Add SplitViewController
Add three static cells for repos, users and profile to RootVC for SplitVC
Embed SplitVC in SplitContainerVC
Make SplitContainerVC the delegate of SplitVC; add constraints to container view
Set RootVC as default VC for SplitVC
Add basic setup for GithubService with fetchRepos method
Add Repo class and method to parse JSON response into repos in GithubService