Trello 234 - Documentation and Examples for Node Placement custom algorithms

This code was in openshift-extras, but after discussion around build tools, we
are going to keep this code in origin-server.
Merge pull request #5749 from calfonso/trello-234

Merged by openshift-bot
consistent trailing slashes - bz1133694
Merge pull request #5751 from rajatchopra/master

Merged by openshift-bot
update version string to match convention
Automatic commit of package [rubygem-openshift-origin-gear-placement] release [0.0.2-1].