initial commit to properly structure this code

Makefile

@@ -2,10 +2,17 @@
 
 # you will need to set the BINARY_C variable to point
 # to the root binary_c directory
+
+# https://stackoverflow.com/questions/30573481/path-include-and-src-directory-makefile/30602701#30602701
 ifeq ($(BINARY_C),)
   $(error BINARY_C is not set)
 endif
 
+SRC_DIR = src
+
+
+
+
 
 CC      := gcc
 LD      := gcc