collab first draft
edits
modified styles slightly
Added info on deleting branches
added concise cheat sheet
From Cmake to Make
Added "checkout" to concise list
Added short blurb about forking.
Merge branch 'gh-pages' of github.com:regine/meltmodel into gh-pages_merge
Revert "modified styles slightly"

This reverts commit 06102fad7cf06744f763e18677300feb31b95ad6.
Merge branch 'makefile_docs'

Conflicts:
	install.md