:bug: Handle Invalid Linters in main.coffee
:bug: Handle Invalid Linters in main.coffee

elkeis/linter,simurai/linter-plus,blakeembrey/linter,AsaAyers/linter,e-jigsaw/Linter,steelbrain/linter,josa42/Linter,atom-community/linter,UltCombo/linter,Arcanemagus/linter,kaeluka/linter,JohnMurga/linter,shawninder/linter,mdgriffith/linter,iam4x/linter,DanPurdy/linter,levity/linter,AtomLinter/Linter