fix build

ref: http://stackoverflow.com/questions/25423999/could-not-find-com-google-android-gmsplay-services5-0-77
Sure, I can give a try later.
2014 年 10 月 13 日 下午 12:34于 "ThrowDice" <notifications@github.com>写道：

> In app/build.gradle:
>
> > @@ -20,7 +20,7 @@ android {
> >  }
> >
> >  dependencies {
> > -    compile 'com.google.android.gms:play-services:5.0.77'
> > +    compile 'com.google.android.gms:play-services:5.0.86'
>
> For building the app module only, it seems that we can just remove this
> line. Could you remove this gms dependency and rebuild again locally?
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/gdgshanghai/Android-Wear-Codelab/pull/1/files#r18753657>
> .
>