Add a new very simple example

examples/simple/Makefile

@@ -0,0 +1,22 @@
+# Compiler flags to enable all warnings & debug info
+CFLAGS = -Wall -Werror -g -O0
+
+# Path to the nanopb root folder
+NANOPB_DIR = ../..
+CFLAGS += -I$(NANOPB_DIR)
+
+# C source code files that are required
+CSRC  = simple.c                   # The main program
+CSRC += simple.pb.c                # The compiled protocol definition
+CSRC += $(NANOPB_DIR)/pb_encode.c  # The nanopb encoder
+CSRC += $(NANOPB_DIR)/pb_decode.c  # The nanopb decoder
+
+# Build rule for the main program
+simple: $(CSRC)
+	$(CC) $(CFLAGS) -osimple $(CSRC)
+
+# Build rule for the protocol
+simple.pb.c: simple.proto
+	protoc -osimple.pb simple.proto
+	python $(NANOPB_DIR)/generator/nanopb_generator.py simple.pb
+