message: More explanation in README.
diff: @@ -26,7 +26,9 @@ The `Concurrency` flag enables/disables some non-determinsm of the environment,
  specifically:
  - if TRUE, then the environment can non-deterministically advance the height or update the light client of a chain.
  -This configuration simulates a liveness problem caused by the way `UpdateClient` is used by relayers, and will lead the model to stutter. See more details in the [disclosure log](https://github.com/informalsystems/ibc-rs/pull/83).
  +This configuration simulates a liveness problem caused by the way `UpdateClient` is used by relayers, and will lead the model to stutter.
  +To be clear: the stuttering is not caused by a bug in the ICS3 protocol itself; this model simply captures the original (faulty) algorithms surrounding the ICS3 protocol.
  +See more details in the [disclosure log](https://github.com/informalsystems/ibc-rs/pull/83).
  - if FALSE, then the model should check correctly.
  3. add the invariant `ConsistencyInv` and `TypeInvariant` as well as the property (temporal formula) `Termination`.
  