Altmarkets.io added to our media:  Website and announcement

https://gitlab.com/electronic-gulden-foundation/website-2017-/commit/995c2ded2b176f6cefaebbc59ff76cf071cd3704
and
https://gitlab.com/electronic-gulden-foundation/bitcointalk-forum-e-gulden-aankondiging/commit/cf6955558e2f23b22feb530c23a4ea9ce7e05b15