Installing ATLAS
Add Theano flags for ATLAS
Merge remote-tracking branch 'rizar/rnn2' into rnn2-pep8
PEP8 fixes
Merge branch 'rnn2-pep8' of https://github.com/bartvm/blocks into bartvm-rnn2-pep8

Conflicts:
	blocks/tests/test_rnn.py

I removed a function before merging.
Merge branch 'bartvm-rnn2-pep8' into rnn2