Fix for JS SDK needing a key

Author: gfosco

src/index.js

@@ -80,7 +80,7 @@ function ParseServer({
   cloud,
   collectionPrefix = '',
   clientKey = '',
-  javascriptKey = randomString(20),
+  javascriptKey = '',
   dotNetKey = '',
   restAPIKey = '',
   fileKey = 'invalid-file-key',
@@ -92,7 +92,7 @@ function ParseServer({
 }) {
 
   // Initialize the node client SDK automatically
-  Parse.initialize(appId, javascriptKey, masterKey);
+  Parse.initialize(appId, javascriptKey || 'unused', masterKey);
   Parse.serverURL = serverURL;
 
   if (databaseAdapter) {