Add chinese language

Fixes #311

Author: Antoine Aflalo

SoundSwitch/Localization/Language.cs

@@ -26,6 +26,7 @@ public enum Language
         Español = 3,
         Norsk = 4,
         Português = 5,
-        Italiano = 6
+        Italiano = 6,
+        Chinese = 7
     }
 }

SoundSwitch/Localization/LanguageParser.cs

@@ -42,6 +42,8 @@ public static CultureInfo ParseLanguage(Language language)
                     return CultureInfo.GetCultureInfo("pt-BR");
                 case Language.Italiano:
                     return CultureInfo.GetCultureInfo("it-IT");
+                case Language.Chinese:
+                    return CultureInfo.GetCultureInfo("zh-CHS");
                 default:
                     return CultureInfo.GetCultureInfo("en");
 
@@ -69,6 +71,8 @@ public static Language ParseLanguage(CultureInfo cultureInfo)
                     return Language.Português;
                 case "it":
                     return Language.Italiano;
+                case "zh":
+                    return Language.Chinese;
                 default:
                     return Language.English;
             }