Resolves numenta/nupic#615. Added a note for using pip - add the --user flag if there are permission errors.
Resolves numenta/nupic#615. Clarified note on usage of --user flag when installing with pip.
Merge remote-tracking branch 'upstream/master'
Reverting README
Resolves numenta/nupic#615. Clarified usage of pip to install python dependencies.
Merge pull request #631 from jefffohl/master

Addresses issue #615