updated contributing indications

CONTRIBUTING.md

@@ -10,6 +10,19 @@
 
 Contributions are welcome and encouraged! Just fork the project and then send a pull request. Be ready to discuss your code and design decisions.
 
+#### Code Style
+Android Upload Service enforces Kotlin standard coding style, using [ktlint](https://ktlint.github.io/).
+
+To speed up development, it's highly recommended to install ktlint and to execute the following in `android-upload-service` root directory:
+
+```
+ktlint installGitPreCommitHook
+cd examples/app/ && ktlint --android applyToIDEAProject -y && cd ../..
+```
+
+#### Development
+To develop Android Upload Service and its core modules, clone the project, then open `examples/app/build.gradle` from your Android Studio. In this way you can see all the modules and the demo app, make changes and deploy to your emulator or real device for testing.
+
 **Working on your first Pull Request?** You can learn how from this *free* series [How to Contribute to an Open Source Project on GitHub](https://egghead.io/series/how-to-contribute-to-an-open-source-project-on-github)
 
 ### <a name="help"></a> Asking for help and bug reports

README.md

@@ -46,12 +46,7 @@ Apps and libraries powered by this library. To be included in the following list
 - [Samajbook](https://play.google.com/store/apps/details?id=com.marothiatechs.samaj)
 - [Codeaty](https://play.google.com/store/apps/details?id=com.saifraheem.BagoLearn)
 
-## Contributing <a name="contribute"></a>
-* Do you have a new feature in mind?
-* Do you know how to improve existing docs or code?
-* Have you found a bug?
-
-Contributions are welcome and encouraged! Just fork the project and then send a pull request. Be ready to discuss your code and design decisions.
+## [Contributing](CONTRIBUTING.md) <a name="contribute"></a>
 
 ## Do you like the project? <a name="donate"></a>
 Put a star, spread the word and be part of it! New ideas, bugfixes and PRs are always welcome!