Put back password masking docs

This reverts commit 96f8b969aa4e7c1141146527c706629ac036b722.
update what's new for 2.0.0-rc5
bump up binary version for 2.0.0-RC5
Merge pull request #116 from benilovj/2.0.0-rc5

Docs, website update for 2.0.0 RC5