"Version Control in Atom" and "GitHub Package" pages need updating (merging?)

[rsese]

Leftover item from #515:

https://flight-manual.atom.io/using-atom/sections/version-control-in-atom/

• Might need an update or merging with https://flight-manual.atom.io/using-atom/sections/github-package/? Or at least a reference/segue to the GitHub package page.
  • Written pre-GitHub package I think, kinda odd to have the pages separate e.g. this page says "Version control is an important aspect of any project and Atom comes with basic Git and GitHub integration built in." and the GitHub package page says "The github package brings Git and GitHub integration right inside Atom."

Seems like the 2 pages could be smooshed together or the older "Version Control in Atom" page could mention the "GitHub Package" page? So could be a larger change or a small change I guess...

/cc @atom/github-package - not sure if this is already on your radar 📻 but just wanted to mention :v: