Use better build script

Change CMake build script with more modern version.

CMakeLists.txt

@@ -1,21 +1,15 @@
-# CMake entry point
 cmake_minimum_required (VERSION 3.5)
-project (memory-allocators)
+project (memory-allocators LANGUAGES CXX)
 
-## Add headers files
-include_directories (
-	includes/
-)
+set(SOURCES src/Allocator.cpp
+   	src/CAllocator.cpp
+   	src/LinearAllocator.cpp
+   	src/StackAllocator
+   	src/PoolAllocator
+   	src/FreeListAllocator.cpp
+   	src/Benchmark.cpp 
+	src/main.cpp)
 
-
-set(SOURCES src/Allocator.cpp src/CAllocator.cpp src/LinearAllocator.cpp src/StackAllocator src/PoolAllocator src/FreeListAllocator.cpp src/Benchmark.cpp src/main.cpp)
-
-add_compile_options(
-	-std=c++11
-#        -D_DEBUG
-#        -g
-) 
-
-# main.cpp
 add_executable(main ${SOURCES})
-target_link_libraries(main)
+target_include_directories(main PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/includes)
+target_compile_features(main PRIVATE cxx_std_11)