Update bosh-init documentation with Mac OS X dependencies
Update bosh-init documentation with Mac OS X dependencies

[#101454442](https://www.pivotaltracker.com/story/show/101454442)

Signed-off-by: Wagner Camarao <9e4bfaf3f26123bf9b57fb85d8a79f98fea9b2ca@vmware.com>

cloudfoundry/docs-bosh,wcamarao/docs-bosh,cwest/docs-bosh,voelzmo/docs-bosh,bridgetkromhout/docs-bosh,vestel/docs-bosh