PMM-5429 Cleanup and Updating Readme with Selenoid Setup (#235)

* PMM-5429 Cleanup, Fixing readme

* PMM-5429 Removing readme

* PMM-5429 Removing Visual tests

* PMM-5429 Fixing comments.

* PMM-5429 Minor fix

README.md

@@ -2,8 +2,20 @@
 Automated tests for Percona Monitoring and Management
 GUI tests are created for testing frontend of PMM. They include tests for Query Analytics and for Grafana dashboards
 
-## Installation (UI tests version 2.0)
-1. Install Nodejs and atleast npm 8.x on your system
+## Using Selenoid for running tests in Local
+1. Install Node.js and atleast npm 8.x on your system
+2. Selenoid and Selenoid UI use port 4444 and 8080 respectively,
+make sure they are not being used, otherwise update docker-compose.yml file
+3. run npm install in project root.
+4. run prepare_ui_test.sh script in the root directory.
+`bash -x ./prepare_ui_test.sh`
+5. This should start running UI tests in 4 parallel browser sessions inside chrome containers with help of selenoid
+6. Check live execution by launching http://localhost:8080 in your browser.
+
+## If you'd like to have more control over the UI test framework parameters, please check out next sections
+
+### Installation (UI tests version 2.0)
+1. Install Node.js and atleast npm 8.x on your system
 2. Checkout `master` branch for pmm-qa Repo
 3. To run tests on your local systems, delete `codecept.json` and rename `local.codecept.json` to `codecept.json`
 4. Make sure to update URL of the application in the `webdriver` helper in the configuration file (codecept.json)
@@ -19,7 +31,7 @@ GUI tests are created for testing frontend of PMM. They include tests for Query
 
 8. Inside the root folder for `pmm-qa` run `npm install` this will install all required packages
 
-## How to use
+### How to use
 Run all Tests:
 ```
 ./node_modules/.bin/codeceptjs run --steps