implemented several other other of the fixes suggested by the travic bot on "child-process-promise"'s definition file
implemented several other other of the fixes suggested by the travic bot on "child-process-promise"'s definition file

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