spec(spellchecker): handle some weird Linux cases
spec(spellchecker): handle some weird Linux cases

Linux returns ['asked', 'acidify', 'Assad'] for the string "asdfk"
which seems normal to me. Why do OS X and/or Windows return [] for
that string? That seems weird, so I just broke the spec to run different
specs on different platforms.

nirmit/nylas-mail,nylas/nylas-mail,nylas/nylas-mail,nylas-mail-lives/nylas-mail,simonft/nylas-mail,simonft/nylas-mail,simonft/nylas-mail,simonft/nylas-mail,nylas-mail-lives/nylas-mail,nylas-mail-lives/nylas-mail,nirmit/nylas-mail,nylas/nylas-mail,nylas/nylas-mail,simonft/nylas-mail,nylas-mail-lives/nylas-mail,nirmit/nylas-mail,nylas/nylas-mail,nirmit/nylas-mail,nirmit/nylas-mail,nylas-mail-lives/nylas-mail