Added benchmarks to README

README.md

@@ -94,4 +94,28 @@ Drawn by Insufficient Material
 6.d4=Q# 1-0
 
 White wins by Checkmate
+```
+
+## Performance
+
+**octad** has been performance tuned, using
+[pprof](https://golang.org/pkg/runtime/pprof/), with the goal of being fast
+enough for use by octad bots and engines. This implementation relies heavily
+on the use of [bitboards](https://chessprogramming.wikispaces.com/Bitboards),
+resulting in very solid computational performance.
+
+### Benchmarks
+
+The benchmarks can be run with the following command:
+```
+go test -bench=.
+```
+
+Results from the baseline 2019 16" MBP:
+```
+BenchmarkBitboardReverse-12 1000000000 0.000016 ns/op
+BenchmarkStalemateStatus-12 971688 1220 ns/op
+BenchmarkInvalidStalemateStatus-12 1387780 857 ns/op
+BenchmarkPositionHash-12 1429471 841 ns/op
+BenchmarkValidMoves-12 235640 4992 ns/op
 ```