revert floor.obj test file, load it by default in TinyRenderer/main.cpp

data/floor.mtl

@@ -10,4 +10,4 @@ newmtl floor
   Ks 0.0000 0.0000 0.0000
   Ke 0.0000 0.0000 0.0000
   map_Ka floor_diffuse.jpg
-  map_Kd cube.tga
+  map_Kd floor_diffuse.jpg

data/floor.obj

@@ -6,9 +6,9 @@ v  1 -1  1
 v -1 -1  1
 
 vt 0 0
-vt .25 0
-vt .25 .25
-vt 0 .25
+vt 1 0
+vt 1 1
+vt 0 1
 
 vn 0 1 0
 usemtl floor

examples/TinyRenderer/main.cpp

@@ -81,7 +81,7 @@ int main(int argc, char* argv[])
     int textureWidth = gWidth;
     int textureHeight = gHeight;
     
-	TinyRenderObjectData renderData(textureWidth, textureHeight, "african_head/african_head.obj");//floor.obj");
+	TinyRenderObjectData renderData(textureWidth, textureHeight, "floor.obj");