[victorops] add victorops documentation
[victorops] add victorops documentation

yonglehou/sensu-docs,mahata/sensu-docs,yonglehou/sensu-docs,opinionlab/sensu-docs,18672222629/sensu-docs,mahata/sensu-docs,solarkennedy/sensu-docs,dpetzel/sensu-docs,solarkennedy/sensu-docs,yonglehou/sensu-docs,dpetzel/sensu-docs,dpetzel/sensu-docs,danf22/sensu-docs,palourde/sensu-docs,danf22/sensu-docs,mahata/sensu-docs,18672222629/sensu-docs,danf22/sensu-docs,solarkennedy/sensu-docs,palourde/sensu-docs,opinionlab/sensu-docs,dpetzel/sensu-docs,18672222629/sensu-docs,mahata/sensu-docs,opinionlab/sensu-docs,18672222629/sensu-docs,danf22/sensu-docs,opinionlab/sensu-docs,solarkennedy/sensu-docs,yonglehou/sensu-docs