Use /opt/helpy-bundle as bundler install path
Use /opt/helpy-bundle as bundler install path

This removes need to write to system directories, which reduces possible
conflicts, and makes it easier to debug parts installed from bundler.

helpyio/helpy,scott/helpy__helpdesk_knowledgebase,helpyio/helpy,scott/helpy__helpdesk_knowledgebase,scott/helpy__helpdesk_knowledgebase,helpyio/helpy,helpyio/helpy