Update mental.json (#238)

* Update mental.json

added download link for windows release

* Update mental.json

* Update mental.json

add sha256 hash

plugins/mental.json

@@ -6,5 +6,11 @@
   "version": "0.5.b",
   "homepage": "https://github.com/Strum/Strums_Mental_VCV_Modules",
   "manual": "https://github.com/Strum/Strums_Mental_VCV_Modules/wiki/Mental-Modules-WIKI",
-  "source": "https://github.com/Strum/Strums_Mental_VCV_Modules"
+  "source": "https://github.com/Strum/Strums_Mental_VCV_Modules",
+  "downloads": {
+    "win": {
+      "download": "https://github.com/Strum/Strums_Mental_VCV_Modules/releases/download/v0.5.b/mental-0.5.b-win.zip",
+      "sha256": "3d93d74cbbcd4899a367799f5803ed57c6d171f49e3062fe4c3dd8c932e00854"
+    }
+  }
 }