Update NodeJSServerCodegen.java

projectName was already defined so never overriden.

Author: frinux

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NodeJSServerCodegen.java

@@ -263,9 +263,9 @@ public void preprocessSwagger(Swagger swagger) {
 
         if (swagger.getInfo() != null) {
             Info info = swagger.getInfo();
-            if (projectName == null &&  info.getTitle() != null) {
-                // when projectName is not specified, generate it from info.title
-                //used in package.json
+            if (info.getTitle() != null) {
+                // when info.title is defined, use it for projectName
+                // used in package.json
                 projectName = dashize(info.getTitle());
                 this.additionalProperties.put("projectName", projectName);
             }