Update README.md

Add maintanance note

README.md

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 Czytnik Polskich Banknotów is an Open Source mobile app, which goal is to help visually handicapped people live the life we all do. By detecting our local currency's denomination (PLN - Polish zloty) using neural networks, it allows a user to know what banknote they're holding. The application provides support on a daily basis, such as going shopping, using ATMs, buying tickets or visiting restaurants.
 
+## Maintenance
+The app is currently maintained by jankejc:
+* github: github.com/jankejc
+* email: poprostujanko@gmail.com
+
+Feel free to add something to the project. At that moment we are looking especially for iOS, Android, AI model contributors. We highly appreciate feedback from those who would like to test the app. We also want to reach out to those who have expirience in generating data for model training purpose. We are talking about i.e. script in Blender that will generate a lot of good data for any currency in the world.  
+
+Thanks to this we can collect new features that may transform this app to be even more useful for those who live slightly different life. 
+
 ## Download
 
 Aviable at [Play Store](https://play.google.com/store/apps/details?id=pg.eti.project.polishbanknotes)