message: docs(examples): change title of demo
diff: <!DOCTYPE html>
  <html>
  <head>
  - <title>BetterScroll by ustbhuangyi</title>
  + <title>BetterScroll Examples</title>
  <meta charset="utf-8">
  <meta name="viewport"
  content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
  