Added 2 PDF whitepapers

Momentum Proof of Work
Transactions as Proof of Stake 10
Merge pull request #2 from WildWex/master

Added 2 PDF whitepapers
BitShares-PTS v1.0.0, pts.1gh.com pool
BitShares-PTS v1.0.0 updated links
Added link to Source at GitHub
Merge pull request #5 from testzcrypto/master

BitShares-PTS v1.0.0, pts.1gh.com pool
Merge branch 'master' of https://github.com/InvictusInnovations/invictus.io