Updated RM: Formatting and Link to 2018.1b3 Page

README.md

 
 **Sofware Requirement**
 
-Required: Unity 2018.1b3
+Required: [Unity 2018.1b3](https://unity3d.com/unity/beta/unity2018.1.0b3)
-Email: andyt[at]unity3d.com
-Twitter: @andytouch
+- Email: andyt[at]unity3d.com
+- Twitter: @andytouch