Benchmark beta
Add Benchmark

#	Hashrate	1 thread	Size	Duration	CPU	Threads	Version
1	1751.96	437.99	1MH	570.789	1	4	6.18.0
2	1516.63	379.16	1MH	659.356	1	4	6.16.4
3	1452.62	363.16	1MH	688.411	1	4	6.8.1