updates README for new implementation (without dependency on poly module); adds in a yuml.me domain model.
updates README for new implementation (without dependency on poly module); adds in a yuml.me domain model.

incodehq/incode-module-commchannel,incodehq/incode-module-commchannel,incodehq/incode-module-commchannel,incodehq/incode-module-commchannel