Add release notes for rc3
Add release notes for rc3

brigade/jasmine-gem,kapost/jasmine-gem,mavenlink/jasmine-gem,kapost/jasmine-gem,mavenlink/jasmine-gem,amandamholl/jasmine-gem,amandamholl/jasmine-gem,amandamholl/jasmine-gem,brigade/jasmine-gem,brigade/jasmine-gem,mavenlink/jasmine-gem