Merge pull request #474 from adafruit/DHT_doc

Documentation update: Clarify DHT sensor usage for latest DHT sensor library.

Author: igrr

README.md

@@ -177,7 +177,7 @@ ADC_MODE(ADC_VCC);
 ```
 TOUT pin has to be disconnected in this mode.
 
-Note that by default ADC is configured to read from TOUT pin using ```analogRead(A0)```, and 
+Note that by default ADC is configured to read from TOUT pin using ```analogRead(A0)```, and
 ```ESP.getVCC()``` is not available.
 
 #### OneWire (from https://www.pjrc.com/teensy/td_libs_OneWire.html) ####
@@ -210,7 +210,7 @@ Libraries that don't rely on low-level access to AVR registers should work well.
 - [aREST](https://github.com/marcoschwartz/aREST) REST API handler library.
 - [Blynk](https://github.com/blynkkk/blynk-library) - easy IoT framework for Makers (check out the [Kickstarter page](http://tiny.cc/blynk-kick)).
 - [DallasTemperature](https://github.com/milesburton/Arduino-Temperature-Control-Library.git)
-- [DHT11](https://github.com/adafruit/DHT-sensor-library) - initialize DHT as follows: ```DHT dht(DHTPIN, DHTTYPE, 15);```
+- [DHT11](https://github.com/adafruit/DHT-sensor-library) - Download latest v1.1.0 library and no changes are necessary.  Older versions should initialize DHT as follows: ```DHT dht(DHTPIN, DHTTYPE, 15);```
 - [NeoPixelBus](https://github.com/Makuna/NeoPixelBus) - Arduino NeoPixel library compatible with esp8266.
 - [PubSubClient](https://github.com/Imroy/pubsubclient) MQTT library by @Imroy.
 - [RTC](https://github.com/Makuna/Rtc) - Arduino Library for Ds1307 & Ds3231 compatible with esp8266.