message: Update the road map to move 1.2.0 release date to July 2018.
  GitOrigin-RevId:
diff: @@ -24,7 +24,8 @@ milestone. The convention for the priorities are:
  ### 1.2.0
  -Tentative release date: June 2018.
  +Tentative release date: July 2018 (it was June 2018, but we need more time to
  +prepare the Obj-C release).
  * Java
  