message: Update README.md
  Added a note about translations being outdated
diff: @@ -39,6 +39,8 @@ We have documentation in several languages available and you are welcome to cont
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  +> We are currently researching better ideas for translation platforms. That is why the documentation in outdated at the moment. Please, refer to the English documentation for now.
  +
  ### How to explore Iroha really fast?
  Check [getting started](http://iroha.readthedocs.io/en/latest/getting_started/) section in your version of localized docs to start exploring the system.
  