New joint DHT11/DHT22 module

@Gordon it is much better. It is sometimes reads -1 -1 but mostly it is good. (I'm running the tests on an ESP8266 with the new tve build.)

getting DHT sensor values
{
  "raw": "010000000110000110000000001100101101010010",
  "rh": 39, "temp": 20.3 }
Temp is 20.3 and RH is 39
getting DHT sensor values
{ "err": true, "checksumError": true,
  "raw": "01000000011000100000000000110010",
  "temp": -1, "rh": -1 }
Temp is -1 and RH is -1
getting DHT sensor values
{ "err": true, "checksumError": true,
  "raw": "0100000001100001110000000011001",
  "temp": -1, "rh": -1 }
Temp is -1 and RH is -1
getting DHT sensor values
{
  "raw": "010000000110000111000000001100101101010011",
  "rh": 39.1, "temp": 20.3 }
Temp is 20.3 and RH is 39.1

Here is the build version:

>reset()
=undefined
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