add reason for close websocket
fix typo doc
add websocket global timeout configuration
add config doc
Merge pull request #309 from mihawk/feature/ws_global_timeout

Feature/ws global timeout
Merge pull request #308 from mihawk/feature/ws_add_reason_to_close

Feature/ws add reason to close
Merge branch 'feature/ws_global_timeout' into develop
Merge branch 'feature/ws_add_reason_to_close' into develop
Merge remote-tracking branch 'upstream/master'