Improve integration example

Author: alandefreitas

test/integration/CMakeLists.txt

@@ -2,9 +2,12 @@ cmake_minimum_required(VERSION 3.14)
 project(myproject VERSION 1.0.1)
 set(CMAKE_CXX_STANDARD 17)
 
+# Uncomment and adjust the next line if Matplot++ was not installed in a default directory
+# list(APPEND CMAKE_MODULE_PATH put/your/installation/directory/here)
+
 find_package(Matplot++)
 
 if (Matplot++_FOUND)
     add_executable(myprogram main.cpp)
     target_link_libraries(myprogram PRIVATE Matplot++::matplot)
-endif()
+endif ()