try fix travis

scripts/test.e2e.ios.js

@@ -30,10 +30,14 @@ function startRecording() {
 function stopRecording() {
   exec.execSync(`ps -ef | grep ffmpeg`);
   exec.execSync(`killall ffmpeg || true`);
+
   exec.execSync(`ls -l out.avi`);
-  const json = require('./../package.json');
-  json.name = 'fix-travis-rnn';
-  json.version = `0.0.${Date.now()}`;
-  require('fs').writeFileSync('./package.json', JSON.stringify(json, null, 2), { encoding: 'utf-8' });
-  exec.execSync(`npm run release`);
+  exec.execAsync(`sleep 10`).then(() => {
+    exec.execSync(`ls -l out.avi`);
+    const json = require('./../package.json');
+    json.name = 'fix-travis-rnn';
+    json.version = `0.0.${Date.now()}`;
+    require('fs').writeFileSync('./package.json', JSON.stringify(json, null, 2), { encoding: 'utf-8' });
+    exec.execSync(`npm run release`);
+  });
 }