[Practice] WIP UDK environment

I've done some improvements in the environment. I've done a better grass texture, and also tweaked the road texture so the tiling can't be seen.

In the other hand, now there are moving clouds fading away in the peaks, grass (tutorial in tutorials section) and I'm starting with the assets like those walls in the sides of the path.

So, homework for this week:

- Improve the rockwalls shader (normal and diffuse)
- Set of props like weeds or rocks to hide the seams between rock models
- Do some variations of the rockwalls
- Begin with the natural assets as little rocks or other kind of grass.
- Go to the "The Tree of Life" (must not fap)