fix wait

apps/remix-ide-e2e/src/commands/addFile.ts

@@ -16,7 +16,7 @@ class AddFile extends EventEmitter {
 function addFile (browser: NightwatchBrowser, name: string, content: NightwatchContractContent, done: VoidFunction) {
   browser.clickLaunchIcon('udapp')
     .clickLaunchIcon('filePanel')
-    .waitForElementVisible('li[data-id="treeViewDivtreeViewItem.txt"]')
+    .waitForElementVisible('li[data-id="treeViewLitreeViewItemREADME.txt"]')
     .click('li[data-id="treeViewLitreeViewItemREADME.txt"]').pause(1000) // focus on root directory
     .elements('css selector', `li[data-id="treeViewLitreeViewItem${name}"]`, (res) => {
       if (res.value && (res.value as any).length > 0) {