Update SHA
Revert "Update SHA"

This reverts commit 23ba9fa5b865a356fde6575d70874d8ba64eae5f.
Merge pull request #10 from numenta/master

Rebase fork
Replaced $NTA_ROOTDIR by $NTA

$NTA_ROOTDIR is redundant. Its remotion decreases the number of
environment variables to the user set.
Revert "ignore = dirty"
Added "ignore = dirty" again
Update .gitmodules
Update datasethelpers.py
Merge pull request #14 from numenta/master

Rebase fork
Update datasethelpers.py
Solved conflicts
Replaced $NTA_ROOTDIR to $NTA
Merge pull request #792 from DavidRagazzi/env-variables

Replaced NTA_ROOTDIR by NTA
Merge branch 'master' of github.com:numenta/nupic