Update of the github "About" section ?

Hello,

It's maybe time to update the github "About" section from:
```
Appium 2.0 plugin to mock api calls for android apps
```
To:
```
Appium 3.0 plugin to mock api calls for android apps
```
Or something like:
```
Appium 2.0 (and higher) plugin to mock api calls for android apps
```

Best regards,
Paul