Fixes #530: Add docs for arch linux where python 3 is the default

docs/other/linux.md

@@ -29,6 +29,14 @@ In this case, you need to install your system's appropriate kernel module, and y
 
 Periodically, when you upgrade your system's Linux kernel, you might need to run steps 2 and 3 above again, or you can uninstall and reinstall VirtualBox (e.g. `sudo dnf remove VirtualBox && sudo dnf install VirtualBox`).
 
+### Arch Linux
+
+Arch Linux uses Python 3 as the default while Ansible requires Python 2. To get around parse errors you need to specify the path to the python2 interpreter by adding the following to your `config.yml`:
+
+```
+ansible_python_interpreter: "/usr/bin/env python2"
+```
+
 ## Synced Folders
 
 Most issues have to do synced folders. These are the most common ones: