Added go facebook api library

Signed-off-by: Paolo Ibarra <jpibarra1130@gmail.com>

README.md

@@ -30,6 +30,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
     - [ORM](#orm)
     - [Package Management](#package-management)
     - [Science and Data Analysis](#science-and-data-analysis)
+    - [Social Network](#social-network)
     - [Template Engines](#template-engines)
     - [Testing](#testing)
     - [Text Processing](#text-processing)
@@ -312,6 +313,11 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [streamtools](https://github.com/nytlabs/streamtools) - general purpose, graphical tool for dealing with streams of data.
 * [vectormath](https://github.com/spate/vectormath) - Vectormath for Go, an adaptation of the scalar C functions from Sony's Vector Math library, as found in the Bullet-2.79 source code.
 
+## Social Network
+
+*Libraries for social network APIs.*
+
+* [facebook](https://github.com/huandu/facebook) - Go Library that supports the Facebook Graph API
 
 ## Template Engines