Remove bias from OutputInfo.
Layers will compile now.
C++ code compiles.
Python bindings compile.
Debug build compiles.
Fix unit tests.
Update documentation.
Reinitialize benchmark.
Fix pole balancing benchmark.
Fix test case.
Merge pull request #69 from AlexanderFabisch/bias

Bias
Merge branch 'master' into rbm
Fix errors after merging bias.