Bump Version to 2020.2.8 / Updated Changelog

CHANGELOG.md

 # Changelog
 
+## 2020.2.8
+
+#### Fixed
+
+* CRITICAL : Fixed compilation errors when VFX Graph not present
+
 ## 2020.2.7
 
 #### Added

README.md

 
 Gameplay Ingredients comes at latest version with the following compatibility:
 
-**Unity 2020.2 +** : choose the tag  `2020.2.7` 
+**Unity 2020.2 +** : choose the tag  : [![openupm](https://img.shields.io/npm/v/net.peeweek.gameplay-ingredients?label=openupm&registry_uri=https://package.openupm.com)
 
 #### Older Versions
 

package.json

 {
   "name": "net.peeweek.gameplay-ingredients",
   "displayName": "Gameplay Ingredients",
-  "version": "2020.2.7",
+  "version": "2020.2.8",
   "category": "Gameplay",
   "unity": "2020.2",
   "description": "Gameplay ingredients - A Collection of scripts for the editor and runtime to set-up gameplay actions and logic in your games.",