Tutorials are quite outdated

[aleighbrown]

The notebooks as they stand are from Julia 0.5

[kescobo]

Yeah, and we really need more of them. Someone suggested making something like the BioStars handbook in julia, and we started https://github.com/BioJulia/biojulia_handbook. There are some additional suggestions for what should be included and some discussion here. I think this repo probably makes more sense for that stuff.