Benchmark beta
Add Benchmark

#	Hashrate	1 thread	Size	Duration	CPU	Threads	Version
1	2852.58	237.71	1MH	350.560	2	12	6.6.2
2	2319.69	193.31	1MH	431.092	2	12	6.7.0
3	1361.61	226.94	1MH	734.422	1	6	6.7.0
4	1359.80	226.63	1MH	735.400	1	6	6.7.0
5	534.97	89.16	1MH	1869.260	1	6	6.7.0