message: documenting that init_op will not be run when loading from checkpoint
diff: @@ -229,10 +229,14 @@ class SessionManager(object):
  up to `max_wait_secs`, for recovery to succeed.
  If the model cannot be recovered successfully then it is initialized by
  - either running the provided `init_op`, or calling the provided `init_fn`.
  - The local_init_op is also run after init_op and init_fn, regardless of
  + running the `init_op` and calling `init_fn` if they are provided.
  + The `local_init_op` is also run after init_op and init_fn, regardless of
  whether the model was recovered successfully, but only if
  - ready_for_local_init_op passes.
  + `ready_for_local_init_op` passes.
  +
  + If the model is recovered from a checkpoint it is assumed that all
  + global variables have been initialized, in particular neither `init_op`
  + nor `init_fn` will be executed.
  It is an error if the model cannot be recovered and no `init_op`
  or `init_fn` or `local_init_op` are passed.
  