additional region Support

[darkmeadow]

It would be nice if there where a posibility to change the region of lex (since lex launched in ireland recently)

wanted behaviour:

read out region from config file to connect to

current behaviour:

region us-east-1 is hard coded

[ab320012]

the component will accept a region prop now
ex:

class App extends Component {
  render() {
        <LexChat botName="OrderFlowers"
                 IdentityPoolId="us-east-1:7292b8c0-56f1-4441-b2a6-xxxxxxxxxxxx"
                 placeholder="Placeholder text"
                 style={{position: 'absolute'}}
                 backgroundColor="#FFFFFF"
                 height="430px"
                 region="eu-west-1"
                 headerText="Chat with our awesome bot" />
  }
}