Added O'Reilly links
Added O'Reilly links

Noted "Stay tuned for our next ClojureBridgeMN workshop
  (tentatively scheduled for June 25-26)"
Updated Clojure.MN links
Updated the event calendar

clojurebridge-minneapolis/clojurebridgemn.org,clojurebridge-minneapolis/clojurebridgemn.org,clojurebridge-minneapolis/clojurebridgemn.org,clojurebridge-minneapolis/clojurebridgemn.org