Replaced  imports with
Pylearn2 wrappers
Install Pylearn2 on Travis CI
Build pylearn2 outside of blocks directory structure
Use dummy data instead of MNIST
Skip Pylearn2 test for Python 3
Silence Pylearn2 output, fix Model wrapper
Faster flake8 testing
Fixed .travis.yml syntax
Install flake8
Some documentation fixes
Merge pull request #36 from bartvm/pylearn2

WIP: Pylearn2 wrappers
Merge branch 'master' into attention

Conflicts:
	blocks/initialization.py
Various changes and bug fixes in the attention mechanism

Including:
- changed order of dimensions for weights
- pass **kwargs to the super's constructor
- get_dim and initial_glimpses methods
Hanling of mask in recurrent bricks
Add `get_dims`: syntax sugar for `get_dim`
Debug printing of shapes
A bit more docs and new Mixer brick
First working AttentionTransition