added README and COPYING file

COPYING.txt

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+Feel free to copy the game.

README.txt

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+fysxasteroids - A fun and good looking clone of the popular 80s game.
+  - programmed by Martin Felis <martin@fysx.org> -
+
+Use the arrow keys to accelerate and turn your ship and shoot the
+asteroids by pressing space. But be warned: your ship has no break, so be
+careful.
+
+This game also has an optional online highscore mode for which the player
+name, points are transmitted to a server.
+
+CREDITS:
+
+ * Programming, Design,
+        Sounds, and Graphics
+     Martin Felis
+   
+ * Top Level Designer
+     Sir Wolle
+    
+ * Additional Level Design
+     Martin Felis
+     NicoKrass
+     michi
+     Andi
+     Sebastian Felis
+     Khai-Long Ho Hoang
+   
+ * Music
+     DJad - Space Exploration
+   
+ * Libraries
+     libSDL
+     SDL_mixer
+     OGLFT
+     freetype2
+     boost
+     libpng
+     Aaron D. Gifford's sha2 code
+   
+ * Tools
+     GIMP
+     Blender
+     CMake
+     sfxr-sdl
+     Audacity
+   
+ * Special Thanks
+     to my wonderful wife Katrina
+
+Enjoy!
+Martin