Replace UpdateOneOptions/UpdateManyOptions/ReplaceOneOptions with UpdateOptions
Updated README with newer text from master.

JAVA-1409
[JAVA-1393] Documenting BSON module. First pass complete, all missing javadoc has been added.
Javadoc: Fixed Java 8 warnings in BSON module; fixed Javadoc errors in core that prevent javadoc completing in Java 8.
Added support for the listIndexes command to ListIndexesOperation

JAVA-1456
Added ListCollections command support to ListCollectionNamesOperation

JAVA-1455