updated intro text
OS X instructions use homebrew for all the things
Start of linking to the homebrew repository in instructions
Version number must be updated in homebrew-flocker
No flocker-tutorial directory for OS X install
fixed review comments
removed trailing space
Merge pull request #565 from ClusterHQ/update-getting-started-564

updated intro text- 564
Tap repo name changed
Tap repo name changed
Tap repo name changed
Use brew fetch
Addressed some review comments
New way to get sha1sum
Merge pull request #566 from ClusterHQ/homebrew-recipe-498

Homebrew recipe 498
Merge remote-tracking branch 'origin/master' into spellcheck-484

Conflicts:
	docs/gettingstarted/installation.rst