Updating README for hardware v20

Author: Jim Lindblom

README.md

@@ -1,11 +1,11 @@
 SparkFun SX1509 IO Expander Breakout Arduino Library
 ========================================
 
-![SparkFun SX1509 IO Expander Breakout](https://cdn.sparkfun.com//assets/parts/7/4/0/1/11502-01.jpg)
+[![SparkFun SX1509 IO Expander Breakout](https://cdn.sparkfun.com//assets/parts/1/0/9/5/6/13601-01.jpg)](https://www.sparkfun.com/products/13601)
 
-[*SparkFun SX1509 IO Expander Breakout (SKU)*](https://www.sparkfun.com/products/retired/11502)
+[*SparkFun SX1509 IO Expander Breakout (SKU)*](https://www.sparkfun.com/products/13601)
 
-Arduino library for the SX1509 16-I/O expander.
+Arduino library for the SX1509 16-I/O expander. Capable of driving LEDs - with blink, and breathe functions - or monitoring up to 64 buttons in an 8x8 array.
 
 Repository Contents
 -------------------
@@ -19,18 +19,21 @@ Repository Contents
 Documentation
 --------------
 
+* **[SparkFun SX1509 Breakout Board Hookup Guide](https://learn.sparkfun.com/tutorials/sx1509-io-expander-breakout-hookup-guide)** - SparkFun tutorial demonstrating how to hook up the SX1509 Breakout and use this library.
 * **[Installing an Arduino Library Guide](https://learn.sparkfun.com/tutorials/installing-an-arduino-library)** - Basic information on how to install an Arduino library.
 * **[Product Repository](https://github.com/sparkfun/SX1509_IO-Expander)** - Main repository (including hardware files) for the SX1509 IO Expander Breakout.
 
 Products that use this Library
 ---------------------------------
 
-* [BOB-11502](https://www.sparkfun.com/products/retired/11502)- 16 I/O I2C port expander.
+* [BOB-13601](https://www.sparkfun.com/products/13601) - SX1509 16 I/O Breakout Board (v2.0)
+* [BOB-11502](https://www.sparkfun.com/products/retired/11502)- (Retired) 16 I/O I2C port expander.
 
 Version History
 ---------------
 
-* [TODO]() - Description
+* [V_2.0.0](https://github.com/sparkfun/SparkFun_SX1509_Arduino_Library/tree/V_2.0.0) - Version 2.0.0. More user-friendly function calls. Increased clock functionality. More examples.
+* [V_1.0.0](https://github.com/sparkfun/SparkFun_SX1509_Arduino_Library/tree/V_1.0.0) - Version 1.0.0
 
 License Information
 -------------------