Changes
/* Shops */
* http://www.realflight.com/
=== Shops ======= Switzerland ====
* Parts, FPV
** http://fpvracing.ch/ cheaper
** http://www.immersionrc.com/ http://www.fatshark.com/ (goggles, uhf, quad, vtx, ...)
==== International ====
* http://www.hobbyking.com/ (USA, EUR, HK)
* http://team-blacksheep.com/shop (HK)
* http://www.readytoflyquads.com/
* http://www.surveilzone.com/ (free shipping)
== How-to ==
* https://youtu.be/gRSPFYlKo58 How to build Retracts for Quadcopters/multirotors
* http://www.tjinguytech.com/charging-how-tos/parallel-charging Chargin two batteries pack
