JRebel 101: What JRebel is and how it makes Java development lightning fast

One of the best things about the Devoxx Java Conference in Antwerp each year, is that even after our 5th time going there we still meet lots of new developers who aren't quite sure what JRebel actually is. They might have heard different speakers mention it during their talks as being helpful for speeding up development, or saw the ZeroTurnaround team at the booth in the exhibition hall, or just ran into someone wearing a new JRebel t-shirt in the beer line.