Add scipy dependency to setup.py
Merge pull request #78 from graingert/patch-1

Add scipy dependency to setup.py
added an explenation how the explorers can be added to Learning Agents
Update pybrain/rl/explorers/explorer.py

Added table of explorers and explanation how to add explorers to a LearningAgent 
Merge pull request #83 from DavoudTaghawiNejad/master

Improved on the documentation of explorers
minor
Model-based RL, policy iteration, LSTD and LSPI, all for when a
transition probability model is given.
Merge remote branch 'origingithub/master'
minor