Merge branch 'softplus_improved' of github.com:jonathantompson/nn
added accUpdate to nn.LookupTable
MixtureTable:updateOutput
MixtureTable:updateGradInput
MixtureTable unit tests
MixtureTable:updateOutput (expertInput is a Tensor)
MixtureTable:updateOutput (expertGradInput is a Tensor)
MixtureTable unit tests  (expertInput is a Tensor)
MixtureTable doc
added dummies
MixtureTable example2 + bug fix
MixtureTable works for 3D tensors (unit tested)
MixtureTable works with 1D inputs (unit tested)
MixtureTable doc++
MixtureTable type-cast unit tests
added FlattenTable module, a unit test and a element in the documentation.

fixed bad formatting in table.md
preparing interface for CUDA
nn.View is mislabeled in the doc.
Merge pull request #36 from jonathantompson/doc_fix

nn.View is mislabeled in the doc.
initial commit for recursive ConcatTable