Updated JSHint Options

Updates the options that Sublime JSHint plugin uses on itself.
Remove Unused Warning

Removes reporting of unused variables as a warning, since these have changed in JSHint's API to be an error.

Cleans up module syntax to remove unneeded strict declaration and have the more standard pattern of a public module export.
Errors Only

Simplifies reporter to only handle errors and ignores the extra content in the results content (accept for the file path).

More elegant display in the console with an instruction for jumping.