change import style of "nimndata" (#322)

On a fresh install of this package the import style being references as "../src" caused this to fail.

Author: aaronmgdr

src/parser.js

@@ -20,7 +20,7 @@ exports.parse = function(xmlData, options, validationOption) {
   //print(traversableObj, "  ");
   return nodeToJson.convertToJson(traversableObj, options);
 };
-exports.convertTonimn = require('../src/nimndata').convert2nimn;
+exports.convertTonimn = require('./nimndata').convert2nimn;
 exports.getTraversalObj = xmlToNodeobj.getTraversalObj;
 exports.convertToJson = nodeToJson.convertToJson;
 exports.convertToJsonString = require('./node2json_str').convertToJsonString;
@@ -64,4 +64,4 @@ function print(xmlNode, indentation){
     }
     console.log(indentation + "},")
   }
-}
+}