Not throwing error in cleanbuild.sh if temporary folder to be removed doesn't exist
Merge branch 'master' of git://github.com/numenta/nupic
Merge branch 'master' of git://github.com/numenta/nupic
Merge branch 'master' of git://github.com/numenta/nupic
Merge with master
Merge branch 'master' of git://github.com/numenta/nupic
Merge pull request #135 from chetan51/better_build

Not throwing error in cleanbuild.sh if temporary folder to be removed doesn't exist