update contrib guide

Author: bjornregnell

CONTRIBUTING.md

@@ -2,13 +2,13 @@
 
 Contributions are welcome!
 
-1. Open an **issue** and start discussing your suggestions. Issues can comprise e.g. a bug, a documentation improvement, a new or enhanced feature, beginner-friendly examples, tests, etc.
+1. Open an **issue** and start discussing your suggestion. An issue can include a proposal to e.g. fix a bug, improve documentation, include a new or enhanced feature, develop a new beginner-friendly example, add a missing test, etc.
 
-2. **Fork** this repo.
+2. **Fork** this repo and clone your fork as described [here](https://help.github.com/articles/fork-a-repo/).
 
 3. Do your changes and additions in line with the issue discussions. Make minimal, coherent commits with good commit messages.
 
-4. When you are ready with an enhancement that compiles and run according to expectations, create a **pull request** (PR). Make sure your fork is up-to-date with the master repo before creating a PR.
+4. When you are ready with an enhancement that compiles and run according to expectations, create a **pull request** (PR). Make sure that you keep your fork [synced](https://help.github.com/articles/syncing-a-fork/) with this upstream repo before creating a PR.
 
 Please keep the general intention of this repo in mind as outlined in the README; in summary: *Beginner-friendly API:s usable with simple Scala*