Added some improvements to the game.

- New Background
- New Tubes Elements
- Collision with the floor
- Tubes Movements
- Tubes Spawning
- Created a simple script to recompile the code and run it.. run.sh

Future Tasks: 
I will add some comments and clean the code a bit.
I will create a good ReadMe file
Continue the project

Main issue: Images doesn't seem to load every time .. it's kind of random we should find a fix for this..