add example bin file creator, strart to write the readme file. fix a missing offest calculation.

example/b2ws_example_proto_t.h

@@ -0,0 +1,27 @@
+#ifndef B2WS_EXAMPLE_PROTO_T_H
+#define B2WS_EXAMPLE_PROTO_T_H
+
+#include <stdint.h>
+
+#pragma pack (push, 1)
+
+typedef struct b2ws_first_layer_sTag
+{
+    int32_t id;
+    uint16_t size;
+    uint8_t other_four_header_options[4];
+    uint8_t second_layer[];
+} b2ws_first_layer_s,  *ptr_b2ws_first_layer_s;
+
+typedef struct b2ws_second_layer_sTag
+{
+    uint8_t enabled:1;
+    uint8_t other_flag:1;
+    uint8_t bigger_flag:6;
+    uint8_t ip_count;
+    uint32_t ip_addresses[];
+} b2ws_second_layer_s,  *ptr_b2ws_second_layer_s;
+
+#pragma pack (pop)
+
+#endif