Added half of XOR test
Deleted erroneously placed imports
Fixed nntrainer.py and which scipy minimization function was being used.
Fixed reshaping/unrolling weights in nntrainer.

Fixes #17.
Modified comments in nntrainer.
Updated nntrainer to be passed a minimizer instead of using default.

Fixes #24.
Added OR and AND tests.
Moved initRandParams and changed name of feedforward.

Also changed comments and in the process of updating the
train method in nntrainer. This commit will not pass
tests or compile.
Fixed train and added lots of tests.

Fixes #25, fixes #24, fixes #10.
Fixed commented issues with unused imports/initRandParams.
Merge branch 'train-test'

Resolved Conflicts:
	pymind/components/nnetwork.py