Create installvb

Script to install VirtualBox on Ubuntu. Does the following:
1. Defines Debian Distribution
2. Defines Extension Pack
3. Defines Guest Additions (to be installed later on Guest)
4. Defines VirtualBox designated User and Permissions
5. Defines VirtualBox Virtual Machine New Default Location and Permissions
6. Upgrades current OS
7. Downloads and Installs VirtualBox with Extension Pack
8. Set's group permissions for designated user
9. Sets other miscellaneous properties