updated README.md for degradation-tester #15

	name: Benchmarks Degradation Test

	on:
	push:
	branches:
	- "**"

	jobs:
	performance-degradation-check:
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v3

	- name: Setup make
	run: sudo apt-get update && sudo apt-get install make

	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: "1.20.x"

	- name: Tidy up dependencies
	run: go mod tidy

	- name: Install yq
	run: sudo snap install yq

	- name: Install benchstat
	run: go install golang.org/x/perf/cmd/benchstat@latest

	- name: Build degradation tester tool
	run: \|
	cd ./scripts/degradation-tester
	go install .

	- name: Run degradation-test
	run: \|
	make degradation-test
	env:
	GO111MODULE: on

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