Small doc updates

samples/opengl/README.md

@@ -0,0 +1,12 @@
+# OpenGL application
+
+ This example shows interaction with OpenGL library, to render classical 3D test model.
+
+To build use `./build.sh` script without arguments (or specify `TARGET` variable if cross-compiling).
+
+To run use
+
+    ./OpenGlTeapot.kexe
+
+It will render 3D model of teapot. Feel free to experiment with it, the whole power of OpenGL
+is at your hands.

samples/socket/README.md

@@ -0,0 +1,18 @@
+# Sockets demo
+
+Compile the echo server (in EAP only supported on Mac host):
+
+    ./build.sh
+
+Run the server:
+
+    ./EchoServer.kexe 3000 &
+
+Test the server by conecting to it, for example with telnet:
+
+    telnet localhost 3000
+
+Write something to console and watch server echoing it back.
+
+~~Quit telnet by pressing ctrl+] ctrl+D~~
+

samples/tetris/README.md

@@ -1,4 +1,4 @@
-   #Tetris game
+# Tetris game
 
 This example shows implementation of simple Tetris game using SDL
 (Simple DirectMedia Layer) library for rendering. SDL allows easy development