Add libavg (#1270)

* Create Libavg.py

* Update readme.md

* Update readme.md

* Rename Libavg.py to libavg.py

l/libavg.py

@@ -0,0 +1,8 @@
+from libavg import avg
+
+player = avg.Player.get()
+canvas = player.createMainCanvas(size=(640,480))
+rootNode = canvas.getRootNode()
+avg.WordsNode(pos=(10,10), font="arial", 
+        text="Hello World", parent=rootNode)
+player.play()

readme.md

@@ -8,7 +8,7 @@ Thanks to everyone who continues to contribute; new languages are created every
 Make sure to see [contributing.md](/contributing.md) for instructions on contributing to the project!
 
 <!--Languages start-->
-## Languages (878 total)
+## Languages (879 total)
 
 * [!@#$%^&*()_+](%23/%21%40%23%24%25%5E%26%E2%88%97%28%29_%2B)
 * [():;#?!](%23/%28%29%CB%B8%3B%23%EF%BC%9F%21)
@@ -509,6 +509,7 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [LCoffee](l/LCoffee.lcoff)
 * [Less](l/Less.less)
 * [Leszek](l/Leszek.leszek)
+* [libavg](l/libavg.py)
 * [Like, Python](l/Like%2C%20Python.lp)
 * [LilyPond](l/LilyPond.ly)
 * [Limbo](l/Limbo.b)