Remark plugin to embed Expo Snack's using Code Blocks

This plugin parses codeblocks with language set as SnackPlayer and replaces them with embedded Expo's SnackPlayers, you can also provide parameters along with the codeblock to set some basic details.

```SnackPlayer name=Hello%20World description=This%20is%20a%20description
import React from 'react';
import { Text, View } from 'react-native';

const YourApp = () => {
  return (
    <View style={{ flex: 1, justifyContent: "center", alignItems: "center" }}>
      <Text>Try editing me! 🎉</Text>
    </View>
  );
}

export default YourApp;
```

The above code snippet would look like this:

To style the Snack Player wrapper you can use .snack-player class.