fix comments and rename Start to Auto in DmxTriWidget
Fix the case when the callback provided to the client is NULL.
Add a plugin interface for the StreamingClient.
Add the ability to reload plugins via RPC.
Merge pull request #411 from RenZ0/master

fix comments and rename Start to Auto in DmxTriWidget
Merge branch 'master' of https://github.com/OpenLightingProject/ola into e1.37-2