Add links about support and filing bugs to README. Fixes #72.
Add links about support and filing bugs to README. Fixes #72.

Reviewed in https://codereview.appspot.com/9596043/

mnieper/endpoints-proto-datastore,GoogleCloudPlatform/endpoints-proto-datastore,jbergant/endpoints-proto-datastore,dhermes/endpoints-proto-datastore,maxandron/endpoints-proto-datastore