Merge pull request #6 from CUBRID/new_features

Enh: APIS-592, Allow to pass an object to createCUBRIDConnection().
Merge pull request #7 from CUBRID/new_features

Doc: updated README documentation.
Merge pull request #8 from CUBRID/new_features

Major refactoring of query queueing mechanism, protocol packets, buffer parsers. Added new minor features.
Fix: APIS-691, Socket error is escalated twice to a connection callback.
Enh: APIS-690, Handle the case when the socket is disconnected by the server.
v2.1.1: Fix: APIS-691, Socket error is escalated twice to a connection callback.
Merge branch 'master' into new_features
Fix: Chef gem version 11.4.4 is not found. Use the latest version.