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/text/text_sprite_fonts.cs

@@ -0,0 +1,7 @@
+using Raylib;
+using static Raylib.Raylib;
+
+public partial class Examples
+{
+    /*******************************************************************************************
    *
    *   raylib [text] example - Font loading and usage
    *
    *   This example has been created using raylib 1.0 (www.raylib.com)
    *   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
    *
    *   Copyright (c) 2014 Ramon Santamaria (@raysan5)
    *
    ********************************************************************************************/
    
    
    public static void Main()
    {
        // Initialization
        //--------------------------------------------------------------------------------------
        int screenWidth = 800;
        int screenHeight = 450;
    
        InitWindow(screenWidth, screenHeight, "raylib [text] example - sprite fonts usage");
    
        const char msg1[50] = "THIS IS A custom SPRITE FONT...";
        const char msg2[50] = "...and this is ANOTHER CUSTOM font...";
        const char msg3[50] = "...and a THIRD one! GREAT! :D";
    
        // NOTE: Textures/Fonts MUST be loaded after Window initialization (OpenGL context is required)
        Font font1 = LoadFont("resources/custom_mecha.png");          // Font loading
        Font font2 = LoadFont("resources/custom_alagard.png");        // Font loading
        Font font3 = LoadFont("resources/custom_jupiter_crash.png");  // Font loading
    
        Vector2 fontPosition1, fontPosition2, fontPosition3;
    
        fontPosition1.x = screenWidth/2 - MeasureTextEx(font1, msg1, font1.baseSize, -3).x/2;
        fontPosition1.y = screenHeight/2 - font1.baseSize/2 - 80;
    
        fontPosition2.x = screenWidth/2 - MeasureTextEx(font2, msg2, font2.baseSize, -2).x/2;
        fontPosition2.y = screenHeight/2 - font2.baseSize/2 - 10;
    
        fontPosition3.x = screenWidth/2 - MeasureTextEx(font3, msg3, font3.baseSize, 2).x/2;
        fontPosition3.y = screenHeight/2 - font3.baseSize/2 + 50;
    
        //--------------------------------------------------------------------------------------
    
        // Main game loop
        while (!WindowShouldClose())    // Detect window close button or ESC key
        {
            // Update
            //----------------------------------------------------------------------------------
            // TODO: Update variables here...
            //----------------------------------------------------------------------------------
    
            // Draw
            //----------------------------------------------------------------------------------
            BeginDrawing();
    
                ClearBackground(RAYWHITE);
    
                DrawTextEx(font1, msg1, fontPosition1, font1.baseSize, -3, WHITE);
                DrawTextEx(font2, msg2, fontPosition2, font2.baseSize, -2, WHITE);
                DrawTextEx(font3, msg3, fontPosition3, font3.baseSize, 2, WHITE);
    
            EndDrawing();
            //----------------------------------------------------------------------------------
        }
    
        // De-Initialization
        //--------------------------------------------------------------------------------------
        UnloadFont(font1);      // Font unloading
        UnloadFont(font2);      // Font unloading
        UnloadFont(font3);      // Font unloading
    
        CloseWindow();                // Close window and OpenGL context
        //--------------------------------------------------------------------------------------
    
        return 0;
    }    
+}