coreograph installation instructions need changing

[mfeblowitz]

According to https://bitbucket.org/Josu/corefgraph, should be:

sudo -H pip install corefgraph

[ylmeng]

^^ Thanks!
The new corefgraph may not be fully compatible with our code due to some format changes in the output. In fact we do not really need corefgraph. The current model does not have to use features generated from there.

In that case, go to code/notes/utilities/pre_processing/news_reader.py
comment out L70, L73
uncomment L72

To test:
start python in your TEA path, run
from code.notes.utilities.pre_processing.news_reader import NewsReader
print NewsReader().pre_process("this is a test")