add gitignore and makefile

.gitignore

@@ -0,0 +1,4 @@
+_build
+
+*.byte
+*.cmi

Makefile

@@ -0,0 +1,30 @@
+MAIN	  = main
+TESTS_DIR = tests
+OUTPUT    = output
+
+TESTS     = $(wildcard $(TESTS_DIR)/*.test)
+
+main:
+	ocamlbuild -use-menhir -no-hygiene $(MAIN).byte
+
+test: main
+test: $(TESTS)
+	@for f in $(TESTS); do \
+		./$(MAIN).byte $$f 1> /dev/null 2> $(OUTPUT); \
+		if [ -s $(OUTPUT) ]; then \
+			printf "%s : ❌ => " $$f; \
+			cat $(OUTPUT); \
+		else \
+			printf "%s : 🎉\n" $$f; \
+		fi; \
+	done; \
+	rm $(OUTPUT)
+
+clean:
+	rm -r *.cmi $(MAIN).byte _build/
+
+archive:
+	tar czf "IC.tar.gz" *.ml Makefile $(TESTS_DIR)
+
+symlinks:
+	ln -s _build/*.cmi .