Installing into a path with a space in it causes a failure

Overview

Stumbled across this in gitlab#347422 (closed). If you try to run the installer into a directory path that has a space somewhere in it (in this case I was trying /mnt/c/Users/Robert May/Development in WSL), the installer will fail as it seems to deliver the path unquoted to some actions. I'm not sure if this is also the case on other platforms yet, but I think it makes sense to list this as a new issue.

Steps to replicate (optional)

Log of how this was triggered: gitlab#347422 (closed)

Proposal (optional)

1. Confirm whether this is limited to WSL
2. Support spaces in folder names or document this fault somewhere.

Environment (optional)

• Operating system: macOS/Linux/etc
• The contents of your gdk.yml
• Ruby version: <!-- output of ruby --version -->
• GDK version: <!-- output of git rev-parse --short HEAD -->