fix(markdownwriter.js): use path function to resolve the path

the i18n path was build by strings. now it use path to resolve it

fix #157

lib/markdownWriter.js

@@ -173,9 +173,9 @@ const generateMarkdown = function(filename, schema, schemaPath, outDir, dependen
   outDir = outDir ? outDir : path.resolve(path.join('.', 'out'));
   let i18nPath;
   if (consoleArgs !== undefined && consoleArgs.i !== undefined){
-    i18nPath=consoleArgs.i ;
+    i18nPath=path.resolve(consoleArgs.i) ;
   } else {
-    i18nPath=__dirname + '/locales';
+    i18nPath=path.resolve(path.join(__dirname, 'locales'));
   }
   console.log(filename);
   i18n.configure({