update CONTRIBUTION.md [skip-ci]

CONTRIBUTION.md

@@ -5,21 +5,25 @@
 Please, have **Git** set up with consistent user information before commiting. Preferably, provide your real name and a working email address.
 
 **Example**:
+
 ```bash
 git config --global user.name "Your Name Comes Here"
 git config --global user.email [email protected]
 ```
 
 ## Make sure that your branch contains clean commits
+
 - Follow the common sense guidelines for writing good commit messages (see below).
 - Make separate commits for separate changes. If you cannot describe what the commit does in one sentence, it is probably a mix of changes and should be separated into several commits.
 - Do not merge `master` into your branch. Instead use `git rebase`. If you need to resolve merge conflicts or include the latest changes.
 
 ## Check your coding style
+
 - Make sure your contributions and changes follow the coding and indentation style of the code surrounding your changes.
 - Do not commit commented-out code or files that are no longer needed. Remove the code or the files unless there is a good reason to keep it.
 
 ## Guidelines for good commit messages
+
 1. Separate subject from body with a blank line
 2. Use the imperative mood in the subject line ("Fix", "Add", "Change" instead of "Fixed", "Added", "Changed")
 3. Limit the subject line to 50 characters
@@ -29,16 +33,29 @@ git config --global user.email [email protected]
 7. Use the body to explain what and why vs. how
 
 Bad:
-<pre>
+
+```bash
 some changes fixing this and that...
-</pre>
+```
 
 Good:
-<pre>
+
+```bash
 fix broken link in reports #123
 
 As foo changed their internal data structure in the last release bar, we need to update our external links accordingly.
-</pre>
+```
+
+## Helpful Sources
 
-# Helpful Sources
 - https://www.atlassian.com/git/tutorials
+
+## Local testing of Bakta
+
+For local tests and debugging of your contributions, you can create a dev Conda/Mamba environment pointing to local source code files:
+
+1. Clone the repository: `git clone https://github.com/oschwengers/bakta.git`
+2. Enter the repo: `cd bakta`
+3. Set the conda environment with the dependencies: `mamba create -n bakta-dev -c conda-forge -c bioconda bakta`
+4. Activate the environment: `mamba activate bakta-dev`
+5. Install via pip pointing to the local source code: `python -m pip install -e .`