Adds calculate button
Adds calculate button
hide heading
Auto runs the code
Improve decriptions
Improve reload / reset button labels
Sorts out problem where code was saved to wrong localStorage slot
first go at adding jshint , in dev it doesn't work
fixes #6  \n but not all commited
moving to Executor object - does not score or tincan
First steps towards tidying the code into objects
Moves to object based design