Update TROUBLESHOOT.md

Add directions for ensuring the correct locale

TROUBLESHOOT.md

@@ -39,3 +39,13 @@ _Common bumps in the road for users - helpful to know as a mentor!_
   2. Make the changes (They may even need to remove and then re-add @reporobot as a contributor to their fork to re-trigger his artwork edits);
   2. Push those changes to their branch on their fork;
   3. Re-open their pull request (from the same page the closed it on) which will trigger @reporobot again.
+
+## System with Non-English Locale
+
+1. Make sure you have an English locale available on your system, e.g. `en_US.UTF-8`. If it is not available yet, you need to install it.
+2. Enforce the English locale to be used when calling *git-it*. In case of Unix-based systems, you can conveniently set up an `alias`.
+
+**Setup for Debian-based systems**
+
+1. Run `dpkg-reconfigure locales` as root and add an English locale, e.g. `en_US.UTF-8`.
+2. Set up an alias for *git-it* to be used with this locale by adding the following line to `~/.bashrc`: `alias git-it="LANG=en_US.UTF-8"`.