Configuration necesary to use this project under tomcat, just edit context.xml and add the following XML Elemnt inside Context

<Manager className="org.apache.catalina.session.PersistentManager" saveOnRestart="true" maxActiveSessions="1" minIdleSwap="1" maxIdleSwap="1" maxIdleBackup="1">
    <Store className="org.redis.session.store.RedisSessionStore" 
            host="localhost"
            port="6379"
            password=""
            database="7"
    />
</Manager>