Merge branch 'master' into decision-process-impl

Author: joulei

.env.sample

@@ -5,3 +5,9 @@ GITHUB_WEBHOOK_SECRET=MUST_BE_CONFIGURED
 # for logging, refer to this document: https://rust-lang-nursery.github.io/rust-cookbook/development_tools/debugging/config_log.html
 # `RUSTC_LOG` is not required to run the application, but it makes local development easier
 # RUST_LOG=MUST_BE_CONFIGURED
+
+# If you are running a bot on non-rustbot account,
+# this allows to configure that username which the bot will respond to.
+# For example write blahblahblah here, if you want for this bot to 
+# respond to @blahblahblah claim.
+# TRIAGEBOT_USERNAME=CAN_BE_CONFIGURED