Adding Bullet build instructions

[git-p4: depot-paths = "//Dynamic_Static_Engine/Dynamic_Static_Engine_main/": change = 38]
Adding Dynamic_Static_Engine README

[git-p4: depot-paths = "//Dynamic_Static_Engine/Dynamic_Static_Engine_main/": change = 39]
Simplifying build process to make Bullet integration easier.
Solution is now set up for debug / release / 32 / 64 builds.
Now easier to link against Dynamic_Static_Engine.

[git-p4: depot-paths = "//Dynamic_Static_Engine/Dynamic_Static_Engine_main/": change = 40]