Added mapColumn function
Updated mapPotential to support N-dimensional topology (but it's too slow right now)
Renamed variables
Optimized getNeighborsND
Simplified code
Update test
Ensure inputDimensions and columnDimensions have at least 1 dimension
Cleaned up avgConnectedSpanForColumnND
Better error messages for assertions
Merge branch 'master' into issue-837
Merge branch 'master' into issue-837
Change grok to nupic

Renamed all instances of grok to nupic for the framework environment.  It is a pretty straight-forward search and replace
Merge new stuff

Merge remote-tracking branch 'upstream/master'
rename of grok OPF framework to nupic

Lots more files got changed to pass the unit tests.
Remove unnecessary semicolons
Merge branch 'master' into issue-837
Ensure compatibility with C++
merge upstream into master

Merge remote-tracking branch 'upstream/master'
fix first_order_0.csv
Point to updated nupic.core