ST3 error in Ubuntu 18.04

[casajake]

OSError: [Errno 2] No such file or directory: '/usr/local/bin/yapf'

You may need to install YAPF and/or configure 'yapf_command' in PyYapf's Settings.

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I corrected this by finding yapf in /usr/bin/yapf3 and putting the path in the user settings.
Otherwise, great program! Thanks for taking the time to write it.

[jason-kane]

I do think adding some if os.path.exists(...) to find yapf in the most common locations would save people some initial grief. I'm not sure about a good way to persist the results of the search so we don't have to re-do it but that should be solve-able.

[jason-kane]

#41 should address this specific issue (ubnt 18.04, yapf3) but I assume there are other common install locations I'm missing.