Filled conf/README.
Filled conf/README.

Change-Id: If4942a0a0ccce7770393b40b05a026f5a1bd2071

opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open,opennetworkinglab/spring-open