Include Contributing section in the readme

README.md

@@ -1,6 +1,7 @@
 [![GitHub Downloads (all assets, all releases)](https://img.shields.io/github/downloads/karasevm/PrivateDNSAndroid/total)](https://github.com/karasevm/PrivateDNSAndroid/releases/latest)
 [![GitHub Release](https://img.shields.io/github/v/release/karasevm/PrivateDNSAndroid)](https://github.com/karasevm/PrivateDNSAndroid/releases/latest)
 [![IzzyOnDroid](https://img.shields.io/endpoint?url=https://apt.izzysoft.de/fdroid/api/v1/shield/ru.karasevm.privatednstoggle&label=IzzyOnDroid)](https://apt.izzysoft.de/fdroid/index/apk/ru.karasevm.privatednstoggle)
+[![Translation status](https://hosted.weblate.org/widget/privatednsandroid/private-dns-quick-toggle/svg-badge.svg)](https://hosted.weblate.org/engage/privatednsandroid/)
 
 # Private DNS Quick Toggle
 A quick settings tile to switch your private dns provider. Supports any number of providers. Makes it easy to turn adblocking dns servers on or off with just
@@ -12,11 +13,11 @@ a single tap.
 Get the latest apk on the [releases page](https://github.com/karasevm/PrivateDNSAndroid/releases/latest) 
 or from [IzzyOnDroid repo](https://apt.izzysoft.de/fdroid/index/apk/ru.karasevm.privatednstoggle).
 
-## Automatic (Shizuku)
+### Automatic (Shizuku)
 1. Install and start [Shizuku](https://shizuku.rikka.app/).
 2. Start the app and allow Shizuku access when prompted.
 
-## Manual
+### Manual
 For the app to work properly you'll need to provide it permissions via ADB:
 
 1. Get to your PC and download platform tools from google [here](https://developer.android.com/studio/releases/platform-tools).
@@ -31,3 +32,18 @@ For the app to work properly you'll need to provide it permissions via ADB:
 
 6. That's it, you should have the app installed.
 
+## Contributing
+
+### Translation
+The easiest way to contribute would be to submit a translation to your language. Thanks to Weblate gratis hosting for open-source projects you can do it without any programming knowledge on [their website](https://hosted.weblate.org/engage/privatednsandroid/).
+#### Translation status
+<a href="https://hosted.weblate.org/engage/privatednsandroid/">
+<img src="https://hosted.weblate.org/widget/privatednsandroid/private-dns-quick-toggle/multi-auto.svg" alt="Translation status" />
+</a>
+
+### Code
+If you want to contribute code please try to adhere to the following guidelines:
+- Include javadoc comments for all the public methods you add
+- Keep the code neatly formatted, you can you the built-in Android Studio formatter
+- Please describe what your code does and how does it do that when sending a PR
+- Before sending a PR please test your change on the oldest and latest supported Android versions (9 and 14 at the time of writing)