First of all, thanks for wanting to contribute to GitHub Team Dashboard! Help is welcome and having more contributors will make this project bigger and better faster.
If you want to contribute to the project, please have a look at the issues section. There you can either create a bug report or discuss about a potential new feature.
Whatever the case may be, it's a good idea to first have a look at the other issues, just in case your bug or idea has already been discussed in a different issue.
Before starting to work on a new feature you should create a new issue. Otherwise you may come across the situation that the feature you spent time working on isn't desired by the maintainer or someone else has already been working on it in parallel.
Should you want to work on a feature please mention it in the related issue. The issue wil be assigned to you, so that other contributors can see there's already someone working on that particular feature.
In general you should have a look at how existing code looks like and adapt to the style you see.
This project follows Kotlin's official coding convention as enforced in gradle.properties.