Changing http.IncomingMessage to ServerRequest instead of ServerResponse.
Merge pull request #101 from kevinswiber/http-incomingmessage-100

Changing http.IncomingMessage to ServerRequest instead of ServerResponse.
Enables string.split(regex). Closes tessel/beta#446. Closes tessel/runtime#99
Merge pull request #105 from tessel/tcr-99

Enables string.split(regex). Closes tessel/beta#446. Closes tessel/runtime#99