Added Fire Damage Support

Adds fire damage to the linked skill(s).

Gem Leveling

Level	Required Level	Required Strength	% of Phys Damage Added as Fire Damage	Experience to Level
1	15	22	20%	28,130
2	18	26	21%	47,943
3	21	30	22%	77,012
4	24	33	23%	118,383
5	27	37	24%	175,816
6	30	40	25%	254,061
7	33	44	26%	359,090
8	36	48	27%	703,128
9	40	52	28%	755,049
10	43	56	29%	1,426,490
11	47	61	30%	1,488,645
12	49	63	31%	1,964,019
13	52	67	32%	2,573,731
14	54	69	33%	3,351,223
15	55	70	34%	9,930,867
16	56	72	35%	21,335,597
17	57	73	36%	50,672,586
18	58			90,018,415
19	59	75	38%	146,997,023
20

Gem Quality

Each percentage of quality adds 0.5% Fire Damage.