Added the --save-dev command to the README documentation
Added "Used By" section
Fixed formatting/Added Links
Moved the "Used By" section to the bottom
Merge branch 'master' of https://github.com/gfranko/amdclean

* 'master' of https://github.com/gfranko/amdclean:
  Moved the "Used By" section to the bottom
  Fixed formatting/Added Links
  Added "Used By" section
  Added the --save-dev command to the README documentation