Merge branch 'cygwin' of https://github.com/BorisSchaeling/pybind11 into BorisSchaeling-cygwin
diff --git a/README.md b/README.md
index 08b58bf..d9505ac 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,7 @@
 2. GCC (any non-ancient version with C++11 support)
 3. Microsoft Visual Studio 2015 or newer
 4. Intel C++ compiler v15 or newer
+5. Cygwin
 
 ## About