updating broker examples
improving broker developer tips
capitalize heading
updates for VCAP_SERVICES
Merge pull request #259 from shalako/master

updating broker examples
services updates
Merge remote-tracking branch 'upstream/master'
Merge pull request #261 from shalako/master

services updates
modify the managed-services diagram based on feedback
Merge pull request #262 from stupakov/services-diagram

modify the managed-services diagram based on feedback