title: Diferences between ESP8266_RTOS_SDK and esp-open-sdk
body: <p>I've compile and flashed both examples from ESP8266_RTOS_SDK (using gen_misc.sh) and esp-open-sdk both I noticed uses different libraries. esp-open-sdk seems to point to nonOS libraries but works with RTOS as well?! There's the blink project template that I've tried to include the uart library <code>#include "uart.h"</code> but it doesn't find it so I've tried to copy and paste it on the project (I don't think that's the right way) but it can't find the function <code>UART_SetBaudrate</code>, how should I properly add the uart lib? Should I compile with <code>gen_misc.sh</code> from <code>ESP8266_RTOS_SDK</code> or using the <code>makefile</code> from <code>esp-open-sdk</code> in the blink project?</p>