updating btsync on rpi

Quick update (2017-Mar)-Thing have gotten a lot easier for btsync (now resilio sync) on rpi (raspbian OS version: jessie): https://www.resilio.com/blog/official-linux-packages-for-sync-now-available

Additional info:

• I had some issues with old rpi (1 i believe).  The Raspbian cpu architecture, default OS, and the sync installation had compatibility issues.  Resolved by upgrading to rpi3.
• Added feature to boot to and run OS from external (still needs SD card initially, but perhaps less possibility of SD card corruption).  Instructions: https://learn.adafruit.com/external-drive-as-raspberry-pi-root?view=all. 
  • Install order: Raspbian Lite, change keyboard assignment to US, Pixel desktop environment, Adafruit (install Adafruit helper outside of desktop environment), Chromium browser, Resilio Sync.