function receiveMessageFromNode(event, msgObj) {
        if (functionMap[msgObj.fn]) {
            if(domainID === msgObj.requester) {
                functionMap[msgObj.fn].apply(null, msgObj.args);
            }
        }
    }
Receives messages from node
@param {object} event  - event received from node
@param {object}   msgObj - json containing - {
                         fn - function to execute on Brackets side
                         args - arguments to the above function
                         requester - ID of the current requester domain