remove incorrect info from README
remove incorrect info from README

Once the interface of dattcore has been reasonably filled out, we should add
this information back into the README. For now, I don't want radically
incorrect informtion giving people a wrong impression.

yoursnetwork/yours-core,yoursnetwork/yours-core,ryanxcharles/datt,dattnetwork/datt,ryanxcharles/datt,dattnetwork/datt