Added new descriptions for progs

www/data/programs/desc/absCanvas/index.markdown

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+absCanvas is my very own java game engine. And by the time it is probably the project i used in the most other things.
+
+The idea was to create a (in the beginning) very simple game engine that doesn't depend on other libraries.  
+*(except a few, like a sound library - if you use sounds)*  
+The drawing is down per Active-Rendering directly on the normal canvas.
+
+The main advantage are the multiple integrated features like
+
+- a complex menusystem with different components, different screens and even animated transitions between them.
+- classes to support loading sprites from spritesheets and to create animated entities.
+- configurable collision detection
+- a *(not fully finished)* Network support where multiple people control different entities on the same world.
+- my own custom map saveformat with IO classes and an editor
+
+absCanvas was initially only for my own projects, and if you want to write a game you are probably better to just use one of the bigger game frameworks.  
+But if you want to see a game framework, made completely from the bottom of java this could be interesting