Remove multiple jdk on travis
Add ruby 2.1.0 to travis
Use 2.1.0 by default
Bump to bson 2.1.0
Bump to beta5 for new bson
Update changelog
#250 for master
Bump to bson 2.2.0
Fix documentation inconsistency after a238ab5
Allow setting of auto_discover option
Merge pull request #254 from rickmzp/auto-discover-fix

Fix Optionable::Unknown when setting auto_discover
Adding 9001 error code, as we got hit by https://jira.mongodb.org/browse/SERVER-7008.
Merge pull request #251 from jonhyman/feature/improved-retry-master

#250 for master
Bump version
Avoid error when using Mongoid with threads