Update CI workflow to use esp32dev environment for consistency #33

	name: Platform IO CI
	on: [push, pull_request]
	jobs:
	build:
	name: Build Examples
	runs-on: ubuntu-latest
	env:
	pio-env: 'esp32dev'
	strategy:
	matrix:
	example: [
	'Blink/Blink.cpp',
	'Do/Do.cpp',
	'FromArray/FromArray.cpp',
	'FromProperty/FromProperty.cpp',
	'FromSerialPort/FromSerialPort.cpp',
	'FromString/FromString.cpp',
	'GlobalDefined/GlobalDefined.cpp',
	'Reduce/Reduce.cpp',
	'ThrottleExample/ThrottleExample.cpp',
	'UltrasonicExample/UltrasonicExample.cpp',
	'AccelerometerExample/AccelerometerExample.cpp',
	'RotaryEncoderExample/RotaryEncoderExample.cpp',
	'PIDTemperatureControl/PIDTemperatureControl.cpp',
	'PIDMotorSpeedControl/PIDMotorSpeedControl.cpp',
	'DistinctExample/DistinctExample.cpp'
	]
	steps:
	- uses: actions/checkout@v2
	- name: Set up python
	uses: actions/setup-python@v2
	with:
	python-version: '3.x'
	architecture: 'x64'
	- name: Install PlatformIO
	run: python -m pip install platformio
	- name: Build firmware
	run: pio ci --lib="." --board ${{env.pio-env}} "examples/${{matrix.example}}"

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