Sprite uses unique vao for rendering

Remove notation of "m" in member variables.

src/include/Dengine/Shader.h

@@ -10,7 +10,7 @@ namespace Dengine
 class Shader
 {
 public:
-	GLuint mProgram;
+	GLuint program;
 
 	Shader();
 	~Shader();

src/include/Dengine/Sprite.h

@@ -15,12 +15,12 @@ public:
 
 	b32 loadSprite(Texture *tex, glm::vec2 pos);
 
-	void initVertexArrayObject(GLuint vao);
-	void render(Shader *shader, GLuint shaderVao);
+	void render(Shader *shader);
 private:
-	glm::vec2 mPos;
-	Texture *mTex;
-	GLuint mVbo;
+	glm::vec2 pos;
+	Texture *tex;
+	GLuint vbo;
+	GLuint vao;
 };
 }