Fix dependency

package.json

 {
 	"name": "com.unity.render-pipelines",
-	"version": "0.1.0",
-	"unity": "2017.3",
+	"version": "0.1.5",
+	"unity": "2018.1",
+    	"com.unity.postprocessing": "0.1.1"
 	}
 }