add CMakeLists.txt to intall headers
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..be131b1
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 2.6)
+project(xbyak)
+
+file(GLOB headers xbyak/*.h)
+install(FILES ${headers} DESTINATION include/xbyak)
+