Update CodeOfCommit.md
fix #226 shut down application when allocated resource is not enough and minor bug fix
Merge pull request #227 from huafengw/resource

add error log when allocated resource is not enough to launch all tasks #226
fix #237, add context information in log line
Merge pull request #238 from clockfly/refine_log

fix #237, add more context info in logs
fix #132 add codecov config
Update README.md
Merge remote-tracking branch 'upstream/master'