Make it clear that identity matchers only work with reference types
Make it clear that identity matchers only work with reference types

This might be obvious to an experienced Swift developer but it could catch people out (like me - see #298).
jeffh/Nimble,feinstruktur/Nimble,twobitlabs/Nimble,Quick/Nimble,abbeycode/Nimble,feinstruktur/Nimble,Quick/Nimble,dgdosen/Nimble,phatblat/Nimble,jeffh/Nimble,dgdosen/Nimble,twobitlabs/Nimble,abbeycode/Nimble,AnthonyMDev/Nimble,twobitlabs/Nimble,abbeycode/Nimble,Quick/Nimble,DanielAsher/Nimble,feinstruktur/Nimble,DanielAsher/Nimble,phatblat/Nimble,AnthonyMDev/Nimble,dgdosen/Nimble,abbeycode/Nimble,DanielAsher/Nimble,jeffh/Nimble,AnthonyMDev/Nimble,dgdosen/Nimble,phatblat/Nimble,jeffh/Nimble