Generate the java protocol buffer class in src directory
Update the definition file of the realtime protocol

Messages about watchers were removed and now all messages have an id. A boolean
is used to decide the reliability of a message and an "ack" id is passed with
all messages to let the peer know what is the last reliable message
acknowledged.
Update the realtime protocol wrapper library
Add a method in Scoreflex to retrieve the player's access token
Update .gitignore file to ignore generated files
Add the realtime protocol wrapper library in the classpath
Add the first version of the part of SDK about the realtime service
Add com.scoreflex.realtime package in the doc fileset