Add download links (#152)

* Add download links

* Add comma, fix JSON

plugins/RJModules.json

@@ -2,8 +2,19 @@
   "slug": "RJModules",
   "name": "RJModules",
   "author": "Miserlou",
+  "license": "BSD 3-clause",
   "version": "0.5.0",
   "homepage": "https://github.com/Miserlou/RJModules",
   "source": "https://github.com/Miserlou/RJModules",
-  "manual": "https://github.com/Miserlou/RJModules/blob/master/README.md"
-}
+  "manual": "https://github.com/Miserlou/RJModules/blob/master/README.md",
+  "downloads": {
+    "win": {
+      "download": "https://github.com/Miserlou/RJModules/releases/download/0.5.0/RJModules-0.5.0-win.zip",
+      "sha256": "51dc6f2b2796d54abde7d080193e3023f55e540165d203afd8ed02f8f892bd23"
+    },
+    "mac": {
+      "download": "https://github.com/Miserlou/RJModules/releases/download/0.5.0/RJModules-0.5.0-osx.zip",
+      "sha256": "bf04fc85f576b22d1557de7564238346e2d7af4b824972d1e6ae14cef0d5dfc1"
+    }
+  }
+}