Merge pull request #565 from Vladuken/improvement/add-belarusian-language

Adds Belarusian language support and fix some mistakes in cpp_russian.xml

Author: hbb20

Diff for: ccp/src/main/java/com/hbb20/CountryCodePicker.java

@@ -2453,6 +2453,7 @@ public enum Language {
         AFRIKAANS("af"),
         ARABIC("ar"),
         BASQUE("eu"),
+        BELARUSIAN("by"),
         BENGALI("bn"),
         CHINESE_SIMPLIFIED("zh", "CN", "Hans"),
         CHINESE_TRADITIONAL("zh", "TW", "Hant"),