Install go (find a guide on the web):
$ sudo apt-get install golang
Install and run "go present":
$ mkdir go $ export GOPATH=$PWD/go $ go get golang.org/x/net $ go get golang.org/x/tools $ go install golang.org/x/tools/cmd/present $ ./go/bin/present
Open up http://localhost:3999 in your browser
For a documentation of the file format see http://godoc.org/code.google.com/p/go.tools/present