added more instructions, service template

modules/swagger-codegen/src/main/java/com/wordnik/swagger/codegen/languages/NodeJSServerCodegen.java

@@ -43,7 +43,9 @@ public class NodeJSServerCodegen extends DefaultCodegen implements CodegenConfig
    * @return A string value for the help message
    */
   public String getHelp() {
-    return "Generates a nodejs server library.";
+    return "Generates a nodejs server library using the swagger-tools project.  By default, " +
+      "it will not generate service classes--which you will have to implement on your own or let " +
+      "the codegen do it with the `-Dservice` environment variable.";
   }
 
   public NodeJSServerCodegen() {

modules/swagger-codegen/src/main/resources/nodejs/service.mustache

@@ -0,0 +1,18 @@
+'use strict';
+
+{{#operations}}
+{{#operation}}
+exports.{{nickname}} = function({{#allParams}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}}) {
+
+  var examples = {};
+  {{#examples}}
+  examples['{{contentType}}'] = {{{example}}};
+  {{/examples}}
+
+  {{#returnType}}
+  if(Object.keys(examples).length > 0)
+    return examples[Object.keys(examples)[0]];
+  {{/returnType}}
+}
+{{/operation}}
+{{/operations}}