Updated README.md

This is version 1.1.

Note:
  From here on, binary files have a supplied header
  seciton. It makes previous binary files invalid, but
  will handle things better in the future.
  Major change is that the feature set is stored in the
  binary file, making it possible to train the same network
  over more than one datafile. The problem of having all data
  in memory is thus overcome.

Merge branch 'master' of https://github.com/Ricardicus/recurrent-neur…

…al-net