fixed version

src/main/coffeescript/view/MainView.coffee

@@ -21,6 +21,12 @@ class MainView extends Backbone.View
       @model.info.license.name = name
       @model.info.license.url = url
 
+    if !@model.info
+      @model.info = {}
+
+    if !@model.info.version
+      @model.info.version = @model.apiVersion
+
     if @model.url.indexOf('http://localhost') is -1 and @model.swaggerVersion is 2
       @model.validatorUrl = @model.url
  

src/main/template/main.handlebars

@@ -15,8 +15,8 @@
     <br>
     <br>
     <h4 style="color: #999">[ <span style="font-variant: small-caps">base url</span>: {{basePath}}
-    {{#if apiVersion}}
-    , <span style="font-variant: small-caps">api version</span>: {{apiVersion}}
+    {{#if info.version}}
+    , <span style="font-variant: small-caps">api version</span>: {{info.version}}
     {{/if}}]
     {{#if validatorUrl}}
     <span style="float:right"><a href="http://online.swagger.io/validator/debug?url={{url}}"><img id="foo" src="http://online.swagger.io/validator?url={{url}}"></a>