feat: add bitrise instructions

README.md

@@ -85,6 +85,21 @@ build a production version signed by the corresponding key ([see](https://ionicf
 npm run build:android
 ```
 
+### Build and deploy iOS using Bitrise
+
+A Bitrise project has been created which allows building and deploying the app to Testflight
+- Access https://app.bitrise.io/
+- Find and access the `superhero-wallet` Project
+- Click on `Start build`
+- Select the branch (`master` is the default branch)
+- Select the target workflow (currently there is only one, called `primary`)
+- Click `Start build`
+- After around 10 minutes the build will be uploaded to Testflight
+
+The build version number is automatically incremented with each build, to prevent conflicts with previous versions.
+
+Bitrise offers 300 credits per month for free. A build usually takes around 10 minutes, which uses 22 credits. More powerful machine types can be selected and used from the Workflow Editor, which can speed up build times, but also use more credits per minute.
+
 ## Security
 If you discover a security vulnerability within this application, please get in touch with us. All security vulnerabilities will be promptly addressed.