Updated:

 1. Update boot.bin to v1.5;

 2. Add wifi_station_set/get_hostname API;

 3. Update SmartConfig to version 2.5.3;

 4. Support GPIO wakeup;

 5. Enable IGMP in LWIP;

 6. Add espconn_init in espconn.h;

 7. Update esp_init_data_default.bin;

 8. IROM start address changed to 0x20000.

A demo that should be run with ESP8266 RTOS SDK. This is the initial version.