Adding simple keys for the user to inherit for creating parameters with a default value and parameters with a default value and range (min/max)
Disallow the use of DefaultKey and DefaultMinMaxKey statically by providing a pure virtual destructor
Adding more comments for the default key base classes
Removing the “struct” before AutoParam definitions since it’s already defined at the top
Changing to use value member
Merge pull request #255 from leapmotion/feat-default-keys

Feature Default Keys for AutoParameter