Changing examples to use makefile

- Testing a modified version of the makefile from raylib Instead of multiple project files for examples.
- Fixed readme example

Examples/audio/audio_music_stream.cs

@@ -0,0 +1,7 @@
+using Raylib;
+using static Raylib.Raylib;
+
+public partial class Examples
+{
+    /*******************************************************************************************
    *
    *   raylib [audio] example - IntPtr playing (streaming)
    *
    *   NOTE: This example requires OpenAL Soft library installed
    *
    *   This example has been created using raylib 1.3 (www.raylib.com)
    *   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
    *
    *   Copyright (c) 2015 Ramon Santamaria (@raysan5)
    *
    ********************************************************************************************/
    
    
    public static void Main()
    {
        // Initialization
        //--------------------------------------------------------------------------------------
        int screenWidth = 800;
        int screenHeight = 450;
    
        InitWindow(screenWidth, screenHeight, "raylib [audio] example - music playing (streaming)");
    
        InitAudioDevice();              // Initialize audio device
    
        IntPtr music = LoadMusicStream("resources/guitar_noodling.ogg");
        
        PlayMusicStream(music);
    
        float timePlayed = 0.0f;
        bool pause = false;
    
        SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
        //--------------------------------------------------------------------------------------
    
        // Main game loop
        while (!WindowShouldClose())    // Detect window close button or ESC key
        {
            // Update
            //----------------------------------------------------------------------------------
            UpdateMusicStream(music);        // Update music buffer with new stream data
            
            // Restart music playing (stop and play)
            if (IsKeyPressed((int)Key.SPACE)) 
            {
                StopMusicStream(music);
                PlayMusicStream(music);
            }
            
            // Pause/Resume music playing 
            if (IsKeyPressed((int)Key.P))
            {
                pause = !pause;
                
                if (pause) PauseMusicStream(music);
                else ResumeMusicStream(music);
            }
            
            // Get timePlayed scaled to bar dimensions (400 pixels)
            timePlayed = GetMusicTimePlayed(music)/GetMusicTimeLength(music)*400;
            //----------------------------------------------------------------------------------
    
            // Draw
            //----------------------------------------------------------------------------------
            BeginDrawing();
    
                ClearBackground(RAYWHITE);
    
                DrawText("MUSIC SHOULD BE PLAYING!", 255, 150, 20, LIGHTGRAY);
    
                DrawRectangle(200, 200, 400, 12, LIGHTGRAY);
                DrawRectangle(200, 200, (int)timePlayed, 12, MAROON);
                DrawRectangleLines(200, 200, 400, 12, GRAY);
                
                DrawText("PRESS SPACE TO RESTART MUSIC", 215, 250, 20, LIGHTGRAY);
                DrawText("PRESS P TO PAUSE/RESUME MUSIC", 208, 280, 20, LIGHTGRAY);
    
            EndDrawing();
            //----------------------------------------------------------------------------------
        }
    
        // De-Initialization
        //--------------------------------------------------------------------------------------
        UnloadMusicStream(music);   // Unload music stream buffers from RAM
    
        CloseAudioDevice();         // Close audio device (music streaming is automatically stopped)
    
        CloseWindow();              // Close window and OpenGL context
        //--------------------------------------------------------------------------------------
    
        return 0;
    }    
+}