Added force_polling option into theme.rb

[glook]

✌️

/cc @zendesk/vegemite

Description

Im using zendesk_app_tools via vm which mount volume via sshfs.

I see that you using listen gem to manage theme file changes.

Its readme says

some filesystems won't work without polling (VM/Vagrant Shared folders, NFS, Samba, sshfs, etc.)

Thats why I added --force-polling option into zat theme preview.

Tasks

• Include comments/inline docs where appropriate
• Write tests
• Update changelog here

Risks

• [HIGH | medium | low] Does it work on windows?
• [HIGH | medium | low] Does it work in the different products (Support, Chat)?
• [HIGH | medium | low] Are there any performance implications?
• [HIGH | medium | low] Any security risks?
• [HIGH | medium | low] What features does this touch?

[token-cjg]

Thanks for this contribution, it will go out in the next release of ZAT.