Added toucan.cred to ignore file (contains username/password)
Modified `destroy` to use default dir /opt/project_TOUCAN
Renamed `install_toucan' to `install_toucan.sh'
Modified `install_toucan.sh` to use default dir /opt/project_TOUCAN, with optional user-specified parameter for install dir
Modified requirements.txt to specifically use django version 1.6
Update requirements.txt - add django-extensions