openlayers/ol3 — pull request #3075 by bartvde (2014-12-22 17:29:01+00:00)
Title: Remove unneeded undefined from ol.proj.ProjectionLike definitions

Since ```ol.proj.ProjectionLike``` already includes undefined, this extra undefined is not needed

Pointed out by @relet in https://github.com/openlayers/ol3/pull/3007#issuecomment-67863654