Implement Simplified Grammar

[chris-huxtable]

Possibly add a new grammar which removes the necessity of { and } where the line is like a path.

Example:

pass: out: quick: on: "em0" from: "192.168.0.2" to: "any"

Instead of:

pass: { 
     out { 
        quick {
            on: "em0"
            from: "192.168.0.2"
            to: "any"
        }
    }
}

[chris-huxtable]

Not the time/not sure its needed.