Hospital typo fixed, doesn't need name
Worry about the format of a location later

We'll probably need a Location class to handle various complexities
associated with locations. Don't force a particular format now.
clarify hospital "expertise"
Population targeting doesn't belong in Hospital

That's the filter's job, which is separate
python variables names are lowercase_separated
Comment out pricing variables

Pricing is complicated. We need to build a pricing function for the
hospital. Until we have that, we don't know what variables are needed,
so leave this commented for now.
scrub whitespace