Enabling testing in the CMakeList

... which allows to use "make test" and/or "ctest -V"

CMakeLists.txt

@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 2.8)
 add_definitions("-std=c++1y")
 
+enable_testing()
+
 add_subdirectory(lint)
 add_subdirectory(test)
 add_subdirectory(example)

test/CMakeLists.txt

@@ -4,3 +4,5 @@ add_definitions("-std=c++1y")
 
 add_executable(test-main test.cc)
 target_link_libraries(test-main pthread)
+
+add_test(TestMain test-main)