CC3000 POST Request Headers

How do I set headers for a POST request?

I have to pass a JSON Web Token for the Authorization header.

I'm using the built in WebClient sketch for the CC3000 WiFi Shield.

I set the token as the variable "JWT" in a #define

Here's my code so far:

Adafruit_CC3000_Client www = cc3000.connectTCP(ip, 80);
  if (www.connected()) {
    www.fastrprint(F("POST "));
    www.fastrprint(WEBPAGE);
    www.fastrprint(F(" HTTP/1.1\r\n"));
    www.fastrprint(F("Host: ")); www.fastrprint(WEBSITE); www.fastrprint(F("\r\n"));
    www.fastrprint(F("\r\n"));
    www.fastrprint(F("Authorization: "));
    www.fastrprint(JWT));
    www.println();
  } else {
    Serial.println(F("Connection failed"));    
    return;
  }