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
Support for overriding SP params in test
Distribute column over inputs uniformly in mapPotential
Renamed test
Make test executable
Removed nta git submodule, replaced with CMake commands to manually clone,
fetch, and checkout nupic.core repository.  This also allows overriding the
defaults on the command line via NUPIC_CORE_REMOTE, for the remote repository
url, and NUPIC_CORE_COMMITISH, for the specific sha.
Remove nupic.core entry from .gitmodules
Specify WORKING_DIRECTORY in git fetch
lower-case "set" for consistency
Updated with feedback in numenta/nupic#817
Same result to EXIT_CODE variable