Rename the module that now contains only GenKeys

benches/gen_keys.rs

@@ -0,0 +1,12 @@
+#![feature(test)]
+
+extern crate test;
+
+use solana::gen_keys::GenKeys;
+use test::Bencher;
+
+#[bench]
+fn bench_gen_keys(b: &mut Bencher) {
+    let mut rnd = GenKeys::new([0u8; 32]);
+    b.iter(|| rnd.gen_n_keypairs(1000));
+}