Add API Version to Codeine Additional Properties

Also updated htmlDocs template so html documentation shows API version.

modules/swagger-codegen/src/main/java/com/wordnik/swagger/codegen/DefaultGenerator.java

@@ -54,6 +54,9 @@ public class DefaultGenerator implements Generator {
           if(license.getUrl() != null)
             config.additionalProperties().put("licenseUrl", license.getUrl());
         }
+        if(info.getVersion() != null) {
+          config.additionalProperties().put("version", info.getVersion());
+        }
       }
 
       StringBuilder hostBuilder = new StringBuilder();