Tests + source clean-up

[leebenson]

• Removes unnecessary slash on node_modules ignore rules
• Comments out unused modes in parseImportPath function
• Adds implicit return when the only statement is ‘return’
• Adds format function to test, to strip out whitespace + semi-colons when testing expected output
• Fixes ESLint’ing
• Adds npm run fix for ESLint auto-fixing

[leebenson]

[leebenson]

Note: I removed the latter two tests, where you're attempting to import vendor/vendor.css, which doesn't exist. I guess this was a stub for something you were planning to add?

[eriklharper]

Thanks for the help! Yes, you are right about those second two tests. I plan on adding support for root-relative paths that by default look in something like node_modules and maybe take a config option with an array of root paths to search from as well, like other import plugins do.