Bug 1322769 - Have eslint ignore servo/; r=manishearth

eslint is complaining about a number of things in servo/. Since servo/
is effectively third party code, just ignore the failures.

MozReview-Commit-ID: 5w80Fn50HM3

--HG--
extra : rebase_source : e6b07f09bd536a6c8ea3d6d8015fe9d9a44dda7a
extra : source : 25d7a78f557aff750085ba7327adfc3941fa8205

.eslintignore

@@ -38,6 +38,7 @@ parser/**
 probes/**
 python/**
 rdf/**
+servo/**
 startupcache/**
 testing/**
 tools/update-packaging/**