Updated repository from ingenuitas to sightmachine.

Updated repo URLs/text from ingenuitas to sightmachine in the following files

/doc/BeagleBone.rst 
/doc/RaspberryPi.rst 
setup.py
/scripts/virtualenv-bootstrap.sh 
/scripts/mkvirt.py 
/scripts/install/win/install.bat 
/scripts/install/ubuntu/simplecv-install.sh
/SimpleCV/ImageClass.py
/SimpleCV/examples/web-based/cloudanimator/index.html
/SimpleCV/examples/machine-learning/machine-learning_nuts-vs-bolts.py