Update Makefile

examples/Makefile

@@ -257,8 +257,8 @@ ifeq ($(PLATFORM),PLATFORM_WEB)
 endif
 
 # Define include paths for required headers
-# NOTE: Several external required libraries (stb and others)
-INCLUDE_PATHS = -I. -I$(RAYLIB_PATH)/src -I$(RAYLIB_PATH)/src/external
+# NOTE: Some external/extras libraries could be required (stb, physac, easings...)
+INCLUDE_PATHS = -I. -I$(RAYLIB_PATH)/src -I$(RAYLIB_PATH)/src/external -I$(RAYLIB_PATH)/src/extras
 
 # Define additional directories containing required header files
 ifeq ($(PLATFORM),PLATFORM_RPI)