message: Accept Icon Type as a props
  In some situations I need to have different icon type for specific icons.
diff: @@ -22,7 +22,8 @@ class IconNB extends Component {
  componentWillMount() {
  if (this.context.theme) {
  - switch (this.context.theme["@@shoutem.theme/themeStyle"].variables.iconFamily) {
  + let iconType = this.props.type != undefined ? this.props.type : this.context.theme["@@shoutem.theme/themeStyle"].variables.iconFamily;
  + switch (iconType) {
  case "Ionicons":
  this.Icon = Ionicons;
  break;
  @@ -65,6 +66,7 @@ class IconNB extends Component {
  IconNB.propTypes = {
  style: PropTypes.oneOfType([PropTypes.object, PropTypes.number, PropTypes.array]),
  + type: PropTypes.string.oneOf(["Ionicons", "Entypo", "FontAwesome", "Foundation", "MaterialIcons", "MaterialCommunityIcons", "Octicons", "Zocial", "SimpleLineIcons"]),
  };
  const StyledIconNB = connectStyle("NativeBase.IconNB", {}, mapPropsToStyleNames)(IconNB);
  