message: license notice
diff: @@ -14,7 +14,7 @@ The main design goals of this mmr implementation are
  # License
  -`zcash_mmr` is primarily distributed under the terms of both the MIT
  +`zcash_mmr` is distributed under the terms of both the MIT
  license and the Apache License (Version 2.0), at your choice.
  See LICENSE-APACHE, and LICENSE-MIT for details.
  