Imporve the example documentation

README.md

@@ -49,10 +49,10 @@ ihta_add_library (
     NAMESPACE IHTA
     IDE_FOLDER ${PROJECT_NAME}
     LIBRARY_TYPE STATIC
-    TEST_INTERNALS
-    OUT_LIB LIB_TARGET
-    OUT_TEST TEST_TARGET
-    TEST_SOURCES test/test.cpp
+    OUT_LIB LIB_TARGET          # The name of the library target will be stored in `LIB_TARGET`. Useful for adding dependencies to the target. See below.
+    OUT_TEST TEST_TARGET        # The name of the unit test target will be stored in `TEST_TARGET`. Useful for adding dependencies to the target. See below.
+    TEST_SOURCES test/test.cpp  # This adds a unit test with the given source files.
+    TEST_INTERNALS              # With this option, the internals of the library can be unit tested as well.
 )
 
 # Add external library link to library