Development doc

Contributing.md

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+# How to Contribute
+
+## Finding What to Contribute
+
+[Roadmap](Roadmap.md) document contains some notes and ideas on what can be done to improve the project.
+
+## Setting Up For Local Development
+
+You will need Golang 1.20+ and NodeJS 18+.
+
+First you need to build frontend (the API backend won't compile without that). To do so, run `npm run build` inside `pkg/frontend` directory.
+
+To build API backend, run `go build -o bin/komoplane .` in the project root.
+
+For frontend development, start API backend with command `bin/komoplane`, then run `npm run dev` inside `pkg/frontend`. Open the suggested URL in your browser.