Vue plugins
@param Vue
@param componentName  specify the component name
function install(Vue, options) {

    var type = Object.prototype.toString.call(options);
    if (type === '[object String]') {
        Vue.component(options, feather);
    } else if (type === '[object Object]') {
        if (options.props) {
            if (options.props.baseClass) {
                feather.props.baseClass = options.props.baseClass;
            }
            if (options.props.classPrefix) {
                feather.props.classPrefix = options.props.classPrefix;
            }
        }
        feather.mixins = [options];
        Vue.component(options.name || 'icon', feather);
    } else {
        Vue.component('icon', feather);
    }
}