Create README.MD

src/samples/dolphin/README.MD

@@ -0,0 +1,20 @@
+## Dolphin sample  
+
+### Features  
+- Animated character
+- Collectibles and mines
+- Big DFF mesh
+- Background songs
+- Overlay
+- Audio effects (ADPCM)
+- Transparent 2D UI
+- Usage of draw() in array mode (for water tiles, very fast)
+
+### Assets
+[Download](http://apgcglz.cluster028.hosting.ovh.net/tyra/1.29.1/samples/dolphin/assets.zip) 
+
+### Screenshot  
+
+[![Dolphin screenshot][dolphin-screenshot]](#) 
+
+[dolphin-screenshot]: http://apgcglz.cluster028.hosting.ovh.net/tyra/1.29.1/samples/dolphin/dolphin.gif