adding a working CUDA model to 2_supervised
gfx.go does not seem to work (on Linux), replaced with gfx.js (and assume the user started gfx server)
moved dropout to new name as now there is nn.Dropout (conflict of class names)
adding an example of using dropout properly
fixed all URLs to point to amazon aws bucket
adding coursera neural net assignments.
split code into starter_code and solutions.
adding read me
minor updates
updating readme
fixing typo
minor.
minor
minor.
minor
minor
Merge pull request #12 from ronanmoynihan/master

adding coursera neural net assignments.