Casbah 2.7.0-RC0
Updated documentation
Update buildDocs.sh
Updated to sbt 0.13.1
Documentation updated for 'fsync' write concern flag

Behavior of the 'fsync' write concern flag, which is:
 1. 'fsync' is identical to 'j' if mongod is running with a journal
 2. 'fsync' requests that database files proper be msync()'d only if mongod is not running with a journal
 3. 'fsync' cannot be used simultaneously with the 'j' flag

https://jira.mongodb.org/browse/SCALA-144
Marking FsyncSafe and Fsync deprecated

https://jira.mongodb.org/browse/SCALA-144