fix(select): Add additional configuration property for select field to change options attribute

Author: mhazy

README.md

@@ -257,6 +257,9 @@ _Example radio field_
 ##### groupProp (string, optional)
 >`groupProp` is what is used to group the options
 
+##### optionsAttr (string, optional)
+>`optionsAttr` is what is used as the attribute ngOptions will be applied to. Defaults to `ng-options`
+
 ##### ngOptions (string, optional)
 >If provided, this is used instead of the default `ng-options` giving you full control (and rendering the other options uncessisary.
 

src/types/select.js

@@ -14,14 +14,15 @@ export default  ngModule => {
         return {
           ngModelAttrs: {
             [ngOptions]: {
-              value: 'ng-options'
+              value: options.templateOptions.optionsAttr || 'ng-options'
             }
           }
         };
       },
       apiCheck: check => ({
         templateOptions: {
           options: check.arrayOf(check.object),
+          optionsAttr: check.string.optional,
           labelProp: check.string.optional,
           valueProp: check.string.optional,
           groupProp: check.string.optional