Unofficial Development Kit for Espressif ESP8266 v2.0.7

• Updated compiler xtensa-lx106-gcc and xtensa-lx106-g++ up to version 5.1 (big thanks jcmvbkbc);
  ATTENTION! For correct build of your firmware, you must add the option -std=gnu90 in directive CFLAGS in Makefile
• Update SDK v1.2.0 + Patch for SSL based on SDK_v1.2.0 + Patch for SmartConfig based on SDK_v1.2.0 (folder ESP8266_SDK);
• Update RTOS SDK, directory "ESP8266_RTOS_SDK";
• Update a utility "utils\esptool-ck.exe" to version 0.4.5-1:
• Updated documentation:
  • Delete files:
    • 2C-ESP8266__SDK__Programming Guide__EN_v1.1.1.pdf
    • 4A-ESP8266__AT Instruction Set__EN_v0.24.pdf
    • 4B-ESP8266__AT Command Examples__EN_v0.4.pdf
  • Added files:
    • 2C-ESP8266__SDK__Programming Guide__EN_v1.2.0.pdf
    • 4A-ESP8266__AT Instruction Set__EN_v0.30.pdf
    • 4B-ESP8266__AT Command Examples__EN_v0.5.pdf
    • SSL\ESP8266__SDK__SSL_User_Manual__EN_v1.0.pdf
  • Updated file:
    • 4B-ESP8266__AT Command Examples__EN_v0.4.pdf
    • 2A-ESP8266__IOT_SDK_User_Manual__EN_v1.1.0.pdf
    • 2B-ESP8266__SDK__IOT_Demo__EN_v0.6.pdf
• Updated examples:
  • i2c_bmp180;
  • nodemcu-firmware;
• Remove examples:
  • hello_world_optimized;
  • ESPWebFramework;