Merge pull request #806 from subutai/spatialImp_switch_default

Updated spatialImp default to be cpp
Download, build, and install python, setuptools, pip, and nupic python
dependencies from scratch in order to build nupic following recent changes to
Travis-CI
Merge pull request #906 from oxtopus/901-travis-cmake-errors

Update NuPIC Travis-CI config