merge with bitbucket repo….
removed some C++11
added stub for results preprocessor
Update README
Merge branch 'master' of https://github.com/datastax/cpp-driver
disposed flag let the connection to close properly
(after the cql_connection is destroyed, the dispose flag is set and allows to secure "late" ASIO callback)
is_disposed protection for cql_connection switched from volatile to lock(mutex)