Different CoreNLP versions mentioned in several places

[ypuzikov]

Hi!

It seems like the CoreNLP version which is actually used in the code (stanfordnlp/corenlp.py) is
stanford-corenlp-full-2015-04-20 and not stanford-corenlp-full-2013-06-20.

Am I wrong? README.md and scripts/config.sh are the files which mention older version.

[Juicechuan]

Thanks for bringing this up! I've uploaded the files accordingly. We should just use stanford-corenlp-full-2015-04-20