update version to 0.5

CMakeLists.txt

 cmake_minimum_required (VERSION 2.8.6)
 project (opendht)
 set (opendht_VERSION_MAJOR 0)
-set (opendht_VERSION_MINOR 1)
+set (opendht_VERSION_MINOR 5)
 set (opendht_VERSION ${opendht_VERSION_MAJOR}.${opendht_VERSION_MINOR})
 set (PACKAGE_VERSION ${opendht_VERSION})
 

configure.ac

-AC_INIT(opendht, 0.1)
+AC_INIT(opendht, 0.5)
 AC_CONFIG_AUX_DIR(ac)
 AM_INIT_AUTOMAKE([foreign])
 AC_CONFIG_HEADERS([config.h])