Merge pull request #368 from Microsoft/propagate-download-dialog-err

Propagate errors thrown in update dialog button press handler

CodePush.js

@@ -353,8 +353,9 @@ async function syncInternal(options = {}, syncStatusChangeCallback, downloadProg
         let message = null;
         const dialogButtons = [{
           text: null,
-          onPress: async () => {
-            resolve(await doDownloadAndInstall());
+          onPress:() => {
+            doDownloadAndInstall()
+              .then(resolve, reject);
           }
         }];
 
@@ -451,4 +452,4 @@ if (NativeCodePush) {
   log("The CodePush module doesn't appear to be properly installed. Please double-check that everything is setup correctly.");
 }
 
-module.exports = CodePush;
+module.exports = CodePush;