v0.1.1 Initial Firmware Release for Duo

1st PP firmware since 2015/12/07

The source code of this version is based on the release from spark/firmware https://github.com/spark/firmware/releases/tag/v0.4.7

FEATURES

• Arduino IDE v1.6.6 with board manager package v0.1.1 compatible
• OTA update user application using online Particle Build
• Bootloader automatically determines running Particle firmware or WICED firmware
• Support setting WiFi credentials via Soft AP, USB serial and BLE