Keyspace in USE statement enclosed in double quotation marks to make keyspace name case-sensitive

From the CQL docs:
"Keyspace names are case-insensitive. To make a name case-sensitive,
enclose it in double quotation marks."
http://www.datastax.com/documentation/cql/3.0/webhelp/cql/cql_reference/
create_keyspace_r.html
Added Konstantin Cherkasov to AUTHORS
Merge pull request #55 from coxx/master

Keyspace in USE statement enclosed in double quotation marks to make key space name case-sensitive