Alternative

Hi,

As an alternative you can pass the following two flags to the `emulator` command:
```
-skindir <dir>                 search skins in <dir> (default <system>/skins)
-skin <name>                   select a given skin
```

For example: `emulator -verbose -avd pixel -wipe-data -skindir $ANDROID_SDK_ROOT/skins -skin pixel`
