Plugins operate on instance

[mkolar]

• Adding houdini mantra support.
• Closing issue #14 and #8
• Moving some plugins to examples
• adding FT_ComponentName and FT_VersionID to ftrack extracted keys

[tokejepsen]

Thanks @mkolar, will have a look through this when I get time. Hopefully next week.

[tokejepsen]

This works here, so merging.