Add readme

maestro/README.md

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+This readme provides instructions on how to run the `flashlight-runner.sh` shell script. The script is designed to execute tests using the Flashlight testing framework.
+
+### Prerequisites
+- Flashlight framework installed on your system
+
+### Usage
+To run the `flashlight-runner.sh` script, use the following command:
+
+```
+cd maestro
+sh ./flashlight-runner.sh <bundleId> <testCommand> <duration(optional)>
+```
+
+### Example
+Here's an example command to run the script:
+
+```
+sh ./flashlight-runner.sh chat.rocket.reactnative tti.yml 3000
+```
+
+### Result Output
+The script will create a results folder if it doesn't already exist, using the name of the test command (with `.yml` removed) as the folder name. The results of the test will be saved as a JSON file within this folder. The file will be named `<bundleId>.json`, where `<bundleId>` is the ID of the bundle or application being tested.
+
+For example, if the test command is `test_command.yml` and the bundle ID is `com.example.app`, the results file will be saved as `./results/test_command/com.example.app.json`.
+
+In order to see results, you can run the following command:
+
+```
+flashlight report ./results/test_command
+```
+
+### Updating the Test File
+Before running the test, the script will update the `appId` field in the test file specified by `<testCommand>`. It replaces the existing `appId` value with the provided `<bundleId>`. Make sure the test file contains an `appId` field that needs to be updated.