Added a reference to the simple subagent readme under mistify-agent for more information on how to build subagents.
Added a reference to the simple subagent readme under mistify-agent
for more information on how to build subagents.

trisk/mistify-os,mistifyio/mistify-os,trisk/mistify-os,trisk/mistify-os,mistifyio/mistify-os,mistifyio/mistify-os