initial commit
works with batches. still needs localized scales
fixed indentation
added scale to Jacobian.backward to fix LookupTable error
unit test for 1D LookupTable
unit tests complete
Added scaleUpdateByKey method. Refactored fairscale into separate file.

Author:    nicholas-leonard <nick@nikopia.org>
LookupTable doc
LookupTable typo
removed Jacobian.backward(... scale)
removed print and residuals
Merge pull request #7 from nicholas-leonard/master

Batch LookupTable