Revert "Remove $NTA"

This reverts commit 467391414788a7255f85bdbfae913f3b0df2fd04.
Merge pull request #143 from chetan51/revert_4673914147

Revert "Remove $NTA"
Merge pull request #12 from rhyolight/10-google-test

Adding darwin64 google test binaries.
Add google test 1.7 libs for linux 32bit
Merge branch 'master' of https://github.com/numenta/nupic.core into 10-google-test
Add google test 1.7 libs for darwin 64bit
Adding darwin binaries created by XCode on OS X 10.9.2.