update .gitignore for clojure/emacs.
update .gitignore for clojure/emacs.

taotetek/hydra,jemc/hydra,jemc/hydra,taotetek/hydra,edgenet/hydra,taotetek/hydra,ZyreApps/hydra,marvinmarnold/hydra,febeling/hydra,jemc/hydra,ZyreApps/hydra,taotetek/hydra,edgenet/hydra,marvinmarnold/hydra,ZyreApps/hydra,c-rack/hydra,ZyreApps/hydra,febeling/hydra,febeling/hydra,c-rack/hydra,c-rack/hydra,marvinmarnold/hydra,jemc/hydra,febeling/hydra,jemc/hydra,edgenet/hydra,febeling/hydra,taotetek/hydra,edgenet/hydra,ZyreApps/hydra,c-rack/hydra,marvinmarnold/hydra,edgenet/hydra