Merge pull request #385 from arbox/fb_german_translation

Added a link to the upcoming German translation.

Author: bbatsov

README.md

@@ -69,6 +69,7 @@ Translations of the guide are available in the following languages:
 * [Chinese Simplified](https://github.com/JuanitoFatas/ruby-style-guide/blob/master/README-zhCN.md)
 * [Chinese Traditional](https://github.com/JuanitoFatas/ruby-style-guide/blob/master/README-zhTW.md)
 * [French](https://github.com/porecreat/ruby-style-guide/blob/master/README-frFR.md)
+* [German](https://github.com/arbox/ruby-style-guide/blob/master/README-deDE.md)
 * [Japanese](https://github.com/fortissimo1997/ruby-style-guide/blob/japanese/README.ja.md)
 * [Korean](https://github.com/dalzony/ruby-style-guide/blob/master/README-koKO.md)
 * [Portuguese](https://github.com/rubensmabueno/ruby-style-guide/blob/master/README-PT-BR.md)