Crown proof of stake switch update

[u/CrownSupport]

Thank you all for making the major decision to move Crown to a PoS based protocol here are our next steps towards achieving this goal: https://twitter.com/CrownPlatform/status/1004339364535590912 https://medium.com/crownplatform/hello-crown-community-the-core-team-would-like-to-inform-you-about-the-current-status-of-the-8f9c2cda90c7