Add installation section in DEV.md #146

	name: Rust

	on:
	push:
	pull_request:

	env:
	CARGO_TERM_COLOR: always

	jobs:
	test:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Cache toolchain
	uses: actions/cache@v2
	env:
	cache-name: cache-rust-toolchain
	with:
	path: ~/.rustup/toolchains
	key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('ci/setup_toolchains.sh') }}
	restore-keys: \|
	${{ runner.os }}-build-${{ env.cache-name }}-
	${{ runner.os }}-build-
	${{ runner.os }}-
	- name: Setup toolchains
	run: ci/setup_toolchains.sh

	- name: Build
	run: ci/build.sh

	- name: Set up Python 3.8
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install tomlkit

	- name: Cache cargo-download
	uses: actions/cache@v2
	env:
	cache-name: cache-cargo-download
	with:
	path: ~/.cargo/bin/cargo-download
	key: ${{ runner.os }}-build-${{ env.cache-name }}
	- name: Run tests
	run: ci/test.sh

Provide feedback