update readme

Author: tfussell

README.md

@@ -1,4 +1,4 @@
 miniz-cpp
 =========
 
-A C++ wrapper around miniz for reading and writing ZIP files
+A cross-platform header-only library for reading and writing ZIP files using a nice simple API similar to [Python's zipfile](https://docs.python.org/3/library/zipfile.html). See [examples/](https://github.com/tfussell/miniz-cpp/tree/master/examples) for a demonstration of the use of the library.