Added XML documentation to TypeRelay.
Added XML documentation to TypeRelay.

dlongest/AutoFixture,sbrockway/AutoFixture,olegsych/AutoFixture,yuva2achieve/AutoFixture,hackle/AutoFixture,sergeyshushlyapin/AutoFixture,dlongest/AutoFixture,StevenJiang2015/AutoFixture,amarant/AutoFixture,sean-gilliam/AutoFixture,sergeyshushlyapin/AutoFixture,sbrockway/AutoFixture,AutoFixture/AutoFixture,adamchester/AutoFixture,Pvlerick/AutoFixture,hackle/AutoFixture,yuva2achieve/AutoFixture,mrinaldi/AutoFixture,adamchester/AutoFixture,olegsych/AutoFixture,dcastro/AutoFixture,mrinaldi/AutoFixture,dcastro/AutoFixture,StevenJiang2015/AutoFixture,zvirja/AutoFixture,amarant/AutoFixture