Benchmarks: runtimes

Gramtools git commit: 90a5edcd73fe9220d9fad5ad1a0891c8b390faec

Note: Also mapping reverse inverse compliment reads. All reads included in count.

dataset	build runtime (s)	quasimap runtime (s)	reads dataset	reads count	total mapped
pf_wabi	177.01	102.37	randomReads.10000.fastq	20000	5043
TB	109.7