Add `clone` glossary link. Many more glossary links to follow.
Merge branch 'master' into enhance-foundations-outlines-cheat
Merge branch 'master' into enhance-foundations-outlines-cheat

Conflicts:
	cheatsheets/github-foundations.md
Merge pull request #16 from github/enhance-foundations-outlines-cheat

Add `clone` glossary link. Many more glossary links to follow.