Add quality bench information in readme

README.md

@@ -124,6 +124,38 @@ The `throughput` benchmark is custom (it does not rely on criterion.rs). In an a
 ![x86_64](./benches/throughput/x86_64.svg)
 ![x86_64-hybrid](./benches/throughput/x86_64-hybrid.svg)
 
+### Quality
+
+This repository includes some of the SMHasher quality tests rewritten in Rust. This allows us to easily assess the quality of GxHash and other hash functions and on different platforms.
+```bash
+cargo bench --bench quality
+```
+
+This will output the results like this:
+```rust
+Bench GxHash
+  ✅ avalanche::<B,4>()
+  ...
+  ✅ avalanche::<B,512>()
+  ✅ distribution_values::<B,4>(128*128)
+  ...
+  ✅ distribution_values::<B,512>(128*128)
+  ✅ distribution_bits::<B,4>()
+  ...
+  ✅ collisions_padded_zeroes::<B>(128*128)
+  ✅ collisions_flipped_bits::<B,2>(9)
+  ...
+  ✅ collisions_permute::<B,u8>(4,&Vec::from_iter(0..16))
+  ...
+  ✅ collisions_permute::<B,u128>(42,&Vec::from_iter(0..64))
+  ✅ collisions_powerset_bytes::<B>(&[0,1,2,3,4,5,6,7,8,9])
+  ...
+  ✅ hasher_collisions_permute::<B,u8>(&[0,1,2,3,4,5,6,7,8,9])
+  ...
+  ❌ some_quality_criterion::<B,32>(3)
+    | Score: 0.0000143. Expected is 0.
+```
+
 ## Contributing
 
 - Feel free to submit PRs