Update README.md

Author: cas4ey

README.md

@@ -5,7 +5,7 @@ SharedAllocator interface is similar to `std::allocator` interface
 so `std::allocator` can be easily replaced by `salloc::shared_allocator` (or by other `salloc::` allocators).
 
 ### adding shared_allocator to your project with CMake
-1. Copy files include/shared_allocator/*.* to your shared_allocator directory inside your include directory 
+1. Copy files include/shared_allocator/*.* to your include directory 
     (for example, include/third_party/shared_allocator or just include/shared_allocator).
 2. Copy files source/*.* to your sources directory (for example, source/shared_allocator).
 3. Include source/shared_allocator/CMakeLists.txt into your main CMakeLists.txt: `add_subdirectory(source/shared_allocator)`