Co-Authored-By: Michał Sochoń <kaszpir@gmail.com>

Voice control update

2. fix line length, grammatic and formatting issues
3. Error handling if request failed
4. Fix README

Voice control by Alexa

Fix issues with xboxswapped controller

Add option to do nothing on older axes, otherwise both joystics were
reacting in the same time to throttle and steering, which made it
totally unusable.

Path follow

Update faq.md

Update build_hardware.md

Arduino drivetrain support

add "sensored" to brushless motor reference

A template meant to familiarize users with Arduino drivetrain related
config options and sample code.
Allows users to control a an Arduino drivetrain car with a joystick.

Document the following:
1. How to connect Arduino pins to servo/ESC.
2. What sketch to load onto the Arduino side
3. Explain calibration mechanism for Arduino drive train.
4. Provide sample snippets showing how to make use of this part.

First comment about instructions to follow stated "updated" 2017 Make Magazine article.  Changed to OUTDATED and moved to end of the paragraph.

Arduino calibration values vary from 0 - 180. This is different from
PCA9685 for which the calibration values vary from 0 - 1500.

Add --arduino switch to the calibrate command to accomodate this.

More details in actuators.md -
"Note that 90 is the usual midpoint (i.e. 1.5 ms pulse width at 50 Hz),
so it is recommended to start with 90 and adjust +/- 5 until you figure
the desired range for steering / throttle."

Arduino board can be used to generate the PWM signals for controlling
steering/throttle of the car.

Standard Firmata sketch needs to be loaded on the Arduino to allow it
to be managed from the host-cpu runnig python app.

Native arduino drive train support is particularly useful for combo
boards like LattePanda with builtin cpu/Arduino.