THRIFT-2667 create Windows Installer via CPack

Signed-off-by: Roger Meier <roger@apache.org>
diff --git a/compiler/cpp/README.md b/compiler/cpp/README.md
index 7e74b89..3c40809 100644
--- a/compiler/cpp/README.md
+++ b/compiler/cpp/README.md
@@ -23,7 +23,12 @@
     cmake -DCMAKE_TOOLCHAIN_FILE=../../../contrib/mingw32-toolchain.cmake ..
     make
 
+### Generate a Windows Installer Package of the Apache Thrift Compiler
 
+    cmake -DCMAKE_TOOLCHAIN_FILE=../../../contrib/mingw32-toolchain.cmake -DTHRIFT_COMPILER_HS=OFF ..
+    cpack
+
+Haskell uses C++ features not supported by mingw32 such as auto or nullptr, that's why we disable it.
 
 ## Build on windows