Add binpacker to Data Structures

README.md

@@ -193,6 +193,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 
 *Generic datastructures and algorithms in Go.*
 
+* [binpacker](https://github.com/zhuangsirui/binpacker) - Binary packer and unpacker helps user build custom binary stream.
 * [bitset](https://github.com/willf/bitset) - Go package implementing bitsets.
 * [bloom](https://github.com/zhenjl/bloom) - Bloom filters implemented in Go.
 * [boomfilters](https://github.com/tylertreat/BoomFilters) - probabilistic data structures for processing continuous, unbounded streams