Just use nano; source .bash_profile on MacOS

README.md

@@ -45,8 +45,17 @@ You need at least Windows 10 with the [Windows 10 Fall Creator update](https://s
 ### MacOS
 
 * Download and run the [Miniconda .pkg installer](https://repo.anaconda.com/miniconda/Miniconda3-latest-MacOSX-x86_64.pkg) in the Python 3.7 version.
+
 * Start the "Terminal" app or [iTerm2](https://www.iterm2.com/).
 
+* If you use something else than `bash` as your shell, you need run
+
+  ```bash
+  $ source ~/.bash_profile
+  ```
+
+  to activate conda.
+
 ### Linux
 
 Start the respective terminal/console app.
@@ -225,18 +234,9 @@ To track resource usage we add the `benchmark` directive, which will write perfo
 
 Create a file called `Snakefile` in the current directory and open it in your favourite editor, e.g.
 
-* Linux:
-
-   ```bash
-   $ nano Snakefile
-   ```
-
-* MacOS:
-
-  ```bash
-  $ open -a Textedit Snakefile
-  ```
-  
+```bash
+$ nano Snakefile
+```
 
 Add the final rule for the mapping: