Added --force flag, gibo, and rktools2k3

I added a `--force` flag to the update command. This is very particularly useful so I don't have to increment version numbers while creating scoop packages.

I created gibo.json and rktools2k3.json files.

[gibo](https://github.com/simonwhitaker/gibo) is a great little utility..
Check out the [installation instructions](https://github.com/simonwhitaker/gibo#installation-on-windows)! :-) 

rktools2k3 gets the Windows Server 2003 Resource Kit Tools binaries. It doesn't create a shim for the utils that wouldn't run on my (Windows 8/8.1) machine.