Can I run android 5.0 using just my browser and genymotion?

Last verified against genymotion.com:

Yes — you can run Android 5.0 via Genymotion’s cloud/SaaS device templates and access those cloud devices from a web browser. Genymotion SaaS / Device Image includes official templates for Android 5.0 (e.g., Nexus 4/5/6 and Custom Phone/Tablet 5.0) and the cloud service exposes devices over the web. Supporting details: Genymotion SaaS (Cloud) and Device Image run virtual Android devices in the cloud and offer WebRTC/browser access; the supported templates list includes multiple Android 5.0 recipes and UUIDs. See: Supported Android devices templates for Genymotion Cloud-SaaS and Genymotion SaaS (Cloud) — Blog / OS images.