Example data for 1.0 release

[diane]

After talking to Barbara, since our release is timed with Libera's paper, we should include the myogenin data around the element.

Include the smaller Mammal and Vertabrate sets that went into figure 1a and 1b, though Barbara also suggested the larger region as well. But to keep download sizes more reasonable perhaps I shouldn't?

[king]

We should probably include the smn1 set in the example data directory as well.