-updated README.md

-fixed shaders for GL2
-added Entity selection tool
-throw out tools from "Demo" window to "Tools" window
-change ComboBox to Tabs for Tools
-Added more verbose tips
-Improved and fixed BrickBreaker collisions
-fixed simple DUB issue

demos/utils/dub.json

@@ -16,7 +16,7 @@
 	],
 	"dependencies": {
 		"bindbc-sdl":"0.19.0",
-		"ecs":{"path":"../../"}
+		"bubel_ecs":{"path":"../../"}
 	},
 	"versions": [
 		"BindSDL_Image",