feat(init): add create-stryker package (stryker-mutator#4644)

Add a `create-stryker` package which allows for `npm init stryker` 🎉. Also, document this as the preferred way of initializing StrykerJS.
---------

Co-authored-by: Nico Jansen <[email protected]>

docs/getting-started.md

@@ -19,53 +19,34 @@ cd my-project
 
 ## 2 Install
 
-The easiest way to get started with Stryker is by installing the stryker-cli globally.
-It is a small package which forwards commands to your local Stryker instance.
+The easiest way to get started with Stryker is by using the `npm init stryker` command.
 
 ```bash
-npm install -g stryker-cli
+npm init stryker
 ```
 
-Optionally, you could also install Stryker directly yourself.
+This command will first install Stryker and then run the Stryker initializer. During the initialization, you'll be asked a series of questions to help set up Stryker for your project.
 
-```bash
-npm install --save-dev @stryker-mutator/core
-```
-
-If you choose to not install the stryker-cli, use `npx stryker` (after installing `@stryker-mutator/core` locally) instead of `stryker` for the rest of the quickstart.
-
----
-
-## 3 Configure
-
-Run this command to configure Stryker.
-
-```bash
-stryker init
-```
-
-If you're asked to install Stryker, choose **Yes**. Follow the questionnaire.
-
-Please let us know if your option is missing here [by opening an issue](https://github.com/stryker-mutator/stryker-js/issues/new).
+If you're asked to install Stryker, choose **Yes**.
 
 After the init is done, inspect the `stryker.config.mjs` file.
 
 For more information on what these options mean, take a look at [the Configuration docs page](./configuration.md)
 
 ---
 
-## 4 Let's kill some mutants
+## 3 Let's kill some mutants
 
 Run Stryker to mutation test your project
 
 ```bash
-stryker run
+npx stryker run
 ```
 
-Have troubles running Stryker? Try running with trace logging.
+Have troubles running Stryker? Try running with trace logging. You can also take a look at our [troubleshooting guide](./troubleshooting.md).
 
 ```bash
-stryker run --logLevel trace
+npx stryker run --logLevel trace
 ```
 
 You can also have a look at [the Configuration docs page](./configuration.md) for more information about the configuration.

packages/create-stryker/README.md

@@ -0,0 +1,7 @@
+[![Slack Chat](https://img.shields.io/badge/slack-chat-brightgreen.svg?logo=slack)](https://join.slack.com/t/stryker-mutator/shared_invite/enQtOTUyMTYyNTg1NDQ0LTU4ODNmZDlmN2I3MmEyMTVhYjZlYmJkOThlNTY3NTM1M2QxYmM5YTM3ODQxYmJjY2YyYzllM2RkMmM1NjNjZjM)
+
+![Stryker](https://github.com/stryker-mutator/stryker-js/raw/master/stryker-80x80.png)
+
+# Create Stryker
+
+An initialer for StrykerJS! Run it with: `npm init stryker`. See [getting started](../../docs/getting-started.md) for more information.