Benchmark beta
Add Benchmark

#	Hashrate	1 thread	Size	Duration	CPU	Threads	Version
1	3611.27	601.88	1MH	276.911	1	6	6.7.0
2	3192.57	532.10	1MH	313.227	1	6	6.6.2
3	3026.43	504.41	10MH	3304.222	1	6	6.6.2
4	1667.18	277.86	1MH	599.816	1	6	6.5.0
5	1500.91	250.15	1MH	666.263	1	6	6.6.2