Update build.gradle

Author: ItsCalebJones

build.gradle

@@ -27,7 +27,7 @@ ext {
     appcompatLibVersion = '1.2.0'
     cardViewLibVersion = '1.0.0'
     materialLibVersion = '1.3.0'
-    iconHandlerVersion = '2.0.0'
+    iconHandlerVersion = 'v2.0.0'
 }
 
 task clean(type: Delete) {