Update rs.js to latest beta

Author: raucao

package-lock.json

@@ -42,7 +42,7 @@
     "inline-loader": "^0.1.1",
     "opener": "^1.5.2",
     "raw-loader": "^4.0.2",
-    "remotestoragejs": "2.0.0-beta.3",
+    "remotestoragejs": "2.0.0-beta.7",
     "rimraf": "^3.0.2",
     "svg-inline-loader": "^0.8.2",
     "url-loader": "^4.1.1",