new Append, Auth, Bgsave, Bitop, Bitpos, Blpop, Brpop, Brpoplpush, Command  commands
Append, Auth and Bgsave inserted in the protocol, and encoding tests done
commit end new Entities, Methods in Redis2TextProtocol created but not filled (TODOs), Tests still need to be done
fixes #24 implementation of new commands Bitop,Bitpos,Blpop,Brpop,Commandgetkeys,Commandinfo,Configget, Protocol updated and test OK