Documentation Update

[Tirre]

Just wanted to report on the player_colors that I mapped myself while watching the demo and checking the values.
Maybe add this somewhere under the readme (similar with the RoundWinReason and HitGroups) as seen in #19 so people can re-use them as necessary.

Color	Number
BLUE	0
GREEN	1
YELLOW	2
ORANGE	3
PURPLE	4

Also for the hitgroups, I believe hitgroup=0 (GENERIC) and hitgroup=10 (GEAR) also exists.
I have never seen hitgroup=10 been targetted, but hitgroup=0 is used for grenades.

Hitgroup	Translation
GENERIC	0
HEAD	1
CHEST	2
STOMACH	3
LEFTARM	4
RIGHTARM	5
LEFTLEG	6
RIGHTLEG	7
GEAR	10