Adding throw exception when there's an error unmarshalling simulation
file, 
part of handling errors when initializing simulation.
Changes to display model when simulation is loaded
Remove extra log parameter
Load model without simulating a single step. Fix issue 37, simulation
not resetting to initial conditions after user stopped it and click
start.
removed broken builders
Implements methods for allowing loading simulations that don't have URL.
Creates method to read simulation info from url and marhsall it as a
json object.
Update to 0.0.3
Merge pull request #35 from openworm/development

Development