Always go through the Helper object to load config
Move config.js into the Shout home directory by default
Change config command to edit config.js in the Shout home directory

Also, copy config.js to the Shout home directory if it's not already
there.
Don't sudo when editing the config
Fix tab completion
Merge pull request #201 from VShell/config-outside-source

Refactor to move config to Shout home by default
Prevent private mode when no user exists
Release 0.40.0
Update README.md
Fix config overwrite
Fix fs.exists to existsSync where necessary
Merge pull request #203 from VShell/fix-exists

Fix fs.exists to existsSync where necessary
Bump version