This is a library for the HTU21D-F Humidity + Temp sensor

Designed specifically to work with the HTU21D-F in the Adafruit shop 
  ----> https://www.adafruit.com/products/1899

These displays use I2C to communicate, 2 pins are required to interface
Adafruit invests time and resources providing this open source code, 
please support Adafruit and open-source hardware by purchasing 
products from Adafruit!

Written by Limor Fried/Ladyada for Adafruit Industries.  
BSD license, all text above must be included in any redistribution

Check out the links above for our tutorials and wiring diagrams 

To download. click the ZIP button in the top-middle navbar, 
rename the uncompressed folder Adafruit_HTU21DF. 
Check that the Adafruit_HTU21DF folder contains Adafruit_HTU21DF.cpp and Adafruit_HTU21DF.h

Place the Adafruit_HTU21DF library folder your arduinosketchfolder/libraries/ folder. 
You may need to create the libraries subfolder if its your first library. Restart the IDE.

We also have a great tutorial on Arduino library installation at:
http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use