Spinner
Displays a circular loading indicator.

Example usage:
import { Spinner } from 'react-native-ios-kit';
<Spinner animating={this.state.loading} />
Theme
Uses following theme properties:
primaryColor- color of the Spinner.
Props
animating (optional)
type: boolean
default value: true
Whether to show or hide the indicator.
hidesWhenStopped (optional)
type: boolean
default value: true
Whether the indicator should hide when not animating.
size (optional)
type: 'small' | 'large'
default value: 'small'
Size of the indicator.
theme (optional)
type: Theme
Custom theme for component. By default provided by the ThemeProvider.