Set up high level pydarm structure

We need a high level structure of pydarm so that it can eventually be published more widely and supported as a module that users can install/import via pip or anaconda. The idea is that there will be several, essential folders:

• tests
• docs
• examples
• pydarm Maybe have tools directory, model directory? We're less sure about this.

The high level structure should also have a few important files like:

• setup.py
• README
• INSTALL etc.