Issue: #190.

Given a model with non string attributes, blueprint queries of the form http://somedomain.com/model/?price=12313 were not working, as the value 12313 was being treated as a string, and turned into a regex by this adapter within the query/index.js `parseValue` function. 

I added a check on the schama type within the definition of `parseValue`. If the type is a integer or float, I return the converted value.