Added NIF -> FFI bridge

Makefile

@@ -0,0 +1,18 @@
+CC=gcc
+CFLAGS=
+OBJ = ffi_nif.o
+TARGET = ffi_nif.so
+LIBS += -ldl -lffi
+ERTS_INCLUDE_PATH=/home/josh/Playground/erlangs/erts-6.0/include
+DIR=c_src
+
+$(DIR)/%.o: $(DIR)/%.c $(DEPS)
+	$(CC) -c -o $@ $< $(CFLAGS) -I$(ERTS_INCLUDE_PATH)
+
+$(TARGET): $(DIR)/$(OBJ)
+	$(CC) -shared -o $@ $^ $(CFLAGS) $(LIBS)
+
+.PHONY : $(TARGET)
+
+clean :
+	$(RM) $(DIR)/*.o *.so