Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -1,32 +1,30 @@
 # Contributing
-
-- before implementing a feature communicate with us via [Matrix](https://matrix.to/#/#tu-fast:tu-dresden.de) or GitHub
-- commit any feature containing pull requests against the develop-branch
-- commit any hot-fixes against main-branch
+TL;DR
+- Before implementing a feature communicate with us via GitHub-Issues or Pull Requests. Code maintainers often have good suggestions regarding the implementation.
+- Commit any changes (new features or hot-fixes) directly against the main branch.
 
 ## Getting started with browser extensions
 
 If you never worked with browser extensions before, you should read this very [nice tutorial](https://developer.chrome.com/docs/extensions/get-started). Alternatively you can use the instructions from [mozilla](https://developer.mozilla.org/de/docs/Mozilla/Add-ons/WebExtensions/Your_first_WebExtension). Make sure you understand the difference between content- and background-scripts, their scopes and how they can exchange information with messaging.
 
 ## Working with this repo
 
-Everything related to the browser extension can be found in `/src`: `manifest.json`, background-script (`background.js`) and so on. Content scripts are in `/src/contentScripts`. In `/src/freshContent` you can find newly created content that is used in TUfast, e.g. the popup or settings-page. `/docs` does _not_ contain documentation for the code, but further instructions for users of TUfast. 
+Everything related to the browser extension can be found in `/src`: the `manifest.json`, the `background.js` and so on. Content scripts are in `/src/contentScripts`. In `/src/freshContent` you can find newly created content that is used in TUfast, e.g. the popup or settings-page. `/docs` does _not_ contain documentation for the code, but further instructions for users of TUfast. 
 
-Steps to contribute (that's standard [Gitflow Workflow](https://www.atlassian.com/git/tutorials/comparing-workflows/gitflow-workflow)):
+Steps to contribute:
 
-1. Create a local clone of this repo `git clone <url-of-your-repo>`.
-2. Checkout develop branch `git checkout develop`.
-3. Create new feature branch from develop `git checkout -b <my_new_feature_branch>`.
+1. Create your local clone of this repo `git clone <url-of-your-repo>`.
+3. Create a new feature branch directly from the main branch `git checkout -b <my_new_feature_branch>`.
 4. Install dependencies `npm ci`. (You need node package manager `npm` installed.)
 5. Run `npm run useChrome` or `npm run useFF` to select the browser you are developing for - this will copy the corresponding manifest.json.
 6. Run `npm run dev` while developing. This is will compile `.sass` and `.ts` files and watch for changes in your working tree.
 7. Load the `./build` directory as an unpacked extension in your browser to test the extension.
 8. Run tests locally before committing code: `npm run test`.
-9. **Increase the version number of the package according to [SemVer](https://semver.org/).**
-10. Create a pull request against `develop`.
+9. **Increase the version number in the `manifest*.json` files according to [SemVer](https://semver.org/). An increase in version number is strictly required beforere releasing a new version!**
+10. Create a pull request against `main`.
 11. Await our review.
 
-**Note:** as a member of TUfast you can work in this repo directly, e.g. you can create branches and push to them, making the contribution process easier.
+**Note:** as a member of the TUfast organization you can also work in this repo directly, e.g. you can create branches and push to them, making the contribution process easier.
 
 ## Used frameworks
 - Build tool: [Snowpack](https://www.snowpack.dev/). Run `npm run dev` to compile sass and ts files.