CMake: Bumpr version Silents warnings, cmake 3.2 is available in distros since many years
diff --git a/CMakeLists.txt b/CMakeLists.txt
index df53be1..e52b25b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.11)
+cmake_minimum_required(VERSION 2.8.11...3.2)
if (NOT DEFINED CMAKE_BUILD_TYPE)
set (CMAKE_BUILD_TYPE Release CACHE STRING "Build type")