Adding developer caveat about internal mode types
Adding developer caveat about internal mode types

mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,magny/DefinitelyTyped,markogresak/DefinitelyTyped,dsebastien/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,borisyankov/DefinitelyTyped,borisyankov/DefinitelyTyped,magny/DefinitelyTyped,AgentME/DefinitelyTyped,dsebastien/DefinitelyTyped