bump tools.nrepl to 0.2.7
bump tools.nrepl to 0.2.7

cider will warn when older versions are in use, for now leiningen is the
likely culprit when the user ends up with an old version but when that
changes we shouldn't be standing in the way of progress :)

grammati/refactor-nrepl,duncanmortimer/refactor-nrepl,Peeja/refactor-nrepl,msgodf/refactor-nrepl,luxbock/refactor-nrepl,grammati/refactor-nrepl,luxbock/refactor-nrepl,msgodf/refactor-nrepl,clumsyjedi/refactor-nrepl,clojure-emacs/refactor-nrepl,clojure-emacs/refactor-nrepl,Peeja/refactor-nrepl,clumsyjedi/refactor-nrepl,duncanmortimer/refactor-nrepl