Update README.md

Author: xing-yang

openstackdays-cloudnativedays-tokyo-2018/README.md

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 # OpenStack Days/Cloud Native Days Tokyo
 
 This repo contains presentations for OpenStack Days/Cloud Native Days Tokyo 2018.
+
+## Presentations
+### Multi-vendor/Multi-cloud Integrated Storage Orchestration with OpenSDS
+Presenters: Lawrence Lai, Yusuke Sato, and Kei Kusunoki
+
+http://openstackdays.com/en/program-detail/#d2p2s10