tree c3f8fb8e1c1cb231c58caacc412cfc0acfe1d016
parent 5b7177b7719365797c46ad0400c6795d4b3eae9b
author Taegeon Um <taegeonum@gmail.com> 1560129314 +0900
committer John Yang <johnyangk@apache.org> 1560129314 +0900

[NEMO-391] Set GrpcMessageEnvironment as a default implementation (#218)

JIRA: [NEMO-391: Set GrpcMessageEnvironment as a default implementation](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-391)

**Major changes:**
- Change the default implementation of MessageEnvironment to GrpcMessageEnvironment