[translations] add emoji flags

Author: hshoff

README.md

@@ -1345,8 +1345,8 @@
 
   This style guide is also available in other languages:
 
-  - **German**: [timofurrer/javascript-style-guide](https://github.com/timofurrer/javascript-style-guide)
-  - **Japanese**: [mitsuruog/javacript-style-guide](https://github.com/mitsuruog/javacript-style-guide)
+  - :de: **German**: [timofurrer/javascript-style-guide](https://github.com/timofurrer/javascript-style-guide)
+  - :jp: **Japanese**: [mitsuruog/javacript-style-guide](https://github.com/mitsuruog/javacript-style-guide)
 
 ## <a name='guide-guide'>The JavaScript Style Guide Guide</a>