Changed the demo app so you can more dynamically experiment with spring values.
Merge branch 'master' of https://github.com/jwilling/JNWSpringAnimation
Sets damping slider min value to 1 instead of 0.
Adds a guard for setting the damping value.
nonatomic.
Merge pull request #3 from jbrennan/feature/spring-tester

Updates to the spring tester and damping