CLI for parse-live-query-server (#2765)

* adds CLI for parse-live-query-server, adds ability to start parse-server with live-query server

* Don't crash when the message is badly formatted

src/cli/parse-live-query-server.js

@@ -0,0 +1,15 @@
+import definitions from './definitions/parse-live-query-server';
+import runner from './utils/runner';
+import { ParseServer } from '../index';
+import express from 'express';
+
+runner({
+  definitions,
+  start: function(program, options, logOptions) {
+    logOptions();
+    var app = express();
+    var httpServer = require('http').createServer(app);
+    httpServer.listen(options.port);
+    ParseServer.createLiveQueryServer(httpServer,  options);
+  }
+})