Linter should enforce coding style rules that will gate merging PRs

[pcowgill]

See here #1224 (comment) for an example

[pcowgill]

Here's another example of rule the linter should enforce #1224 (comment)

[pcowgill]

Should this issue move to an aegir repo?

[pcowgill]

Here's one other linter rule to modify https://github.com/ipfs/js-ipfs-http-client/pull/1224/files#r369679391

[pcowgill]

Closing this since this issue belongs in the aegir repo