Added librarys and test application

src/main.cpp

@@ -1,11 +1,50 @@
 #include <iostream>
 
-using namespace std;
+#include <SDL2/SDL.h>
+#include <Box2D/Box2D.h>
+#include <entityx/entityx.h>
 
-int main( int argc, char *argv[] )
-{
-    cout << "Hello World!" << '\n';
-    cin.get();
+const int WIDTH = 800, HEIGHT = 600;
 
-    return 0;
+/*
+ * If 'main' is defined we clear that definition
+ * to get our default 'main' function back.
+ */
+
+int main( int argc, char *argv[] ) {
+    SDL_Init( SDL_INIT_EVERYTHING );
+
+    //Box2D world just testing
+    b2World *world = new b2World(b2Vec2(0.0f, 98.f));
+    //entityx testing
+    entityx::EntityX ex;
+    entityx::Entity entity = ex.entities.create();
+
+    SDL_Window *window = SDL_CreateWindow( "Hello SDL World", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WIDTH, HEIGHT, SDL_WINDOW_ALLOW_HIGHDPI );
+
+    // Check that the window was successfully created
+    if ( NULL == window )
+    {
+        // In the case that the window could not be made...
+        std::cout << "Could not create window: " << SDL_GetError( ) << std::endl;
+        return 1;
+    }
+
+    SDL_Event windowEvent;
+
+    while ( true )
+    {
+        if ( SDL_PollEvent( &windowEvent ) )
+        {
+            if ( SDL_QUIT == windowEvent.type )
+            {
+                break;
+            }
+        }
+    }
+
+    SDL_DestroyWindow( window );
+    SDL_Quit( );
+
+    return EXIT_SUCCESS;
 }