The file where available languages are statically wasn't properly referenced (lib/ instead of js/).

Translation.md

@@ -11,7 +11,7 @@ The translation concept follows similar concepts as GNU gettext:
 2. Copy one of the files into your languages [two-letter ISO 639-1 code](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes#Partial_ISO_639_table), i.e. to `es.json` for a Spanish.
 3. Open the file in a text editor and change the messages after the english message ID.
 4. Save the file in UTF-8 character encoding.
-5. Add your new language code into the array called `supportedLanguages` in `lib/zerobin.js` (around line 300).
+5. Add your new language code into the array called `supportedLanguages` in `js/zerobin.js` (around line 300).
 6. Done (Pull requests highly welcome!)
 
 ## Technical Details
@@ -40,7 +40,7 @@ Some languages can have more then one plural forms. Which form to use depending
 
 ### Gotchas
 
-Currently we do not inform the JS part about the available languages on the server, but instead these are statically encoded in the file `lib/zerobin.js` in the property `i18n.supportedLanguages` (around line 300). If you add a new language, remember to add it there, too.
+Currently we do not inform the JS part about the available languages on the server, but instead these are statically encoded in the file `js/zerobin.js` in the property `i18n.supportedLanguages` (around line 300). If you add a new language, remember to add it there, too.
 
 If your new language does use more complex plurals then English, you need to add the [formula](http://localization-guide.readthedocs.org/en/latest/l10n/pluralforms.html) for it in two places:
 * [lib/i18n.php](https://github.com/elrido/ZeroBin/blob/master/lib/i18n.php) in class i18n, method _getPluralForm()