Fix #66: Resolve refs before determining the subschema types

Author: bhch

src/ui.js

@@ -657,6 +657,11 @@ class OneOf extends React.Component {
 
             for (let i = 0; i < subschemas.length; i++) {
                 let subschema = subschemas[i];
+                let isRef = subschema.hasOwnProperty('$ref');
+
+                if (isRef)
+                    subschema = this.props.parentArgs.getRef(subschema['$ref']);
+
                 let subType = getSchemaType(subschema);
 
                 if (dataType === 'number') {