Adding LUA tutorials: lua_calls_C1 - lua_calls_C5

Adding blinker demo: lua_blink_led

lua/examples/Makefile

@@ -0,0 +1,10 @@
+DIRS   = lua_blink_led  lua_calls_C1  lua_calls_C2  lua_calls_C3  lua_calls_C4  lua_calls_C5
+all:
+	for n in $(DIRS); do $(MAKE) -C $$n || exit 1; done
+
+upload:
+	for n in $(DIRS); do $(MAKE) -C $$n upload || exit 1; done
+
+clean:
+	for n in $(DIRS); do $(MAKE) -C $$n clean || exit 1; done 
+