Collect Operator
Merge pull request #701 from benjchristensen/collect

Collect Operator
Mark as Deprecated
Remove Extra Synchronization

The use of flatMap/mergeMap already synchronizes.
Standardize Naming of average/sum methods

See https://github.com/Netflix/RxJava/pull/698#issuecomment-31282416
Merge pull request #703 from benjchristensen/small-tweaks

Small Tweaks
Merge pull request #700 from Netflix/docs

various javadoc improvements
adjust javadocs for new sumFoo()/averageFoo() method names