fix the Recurring Event of month on nth week nth day

I fix the one problem,but there have another one about the line of 630.
But i don't know how to do.
the type of Recurring Event is 3.You forget to do.Please fix it soon.:)
fix the Recurring Event of month on nth week nth day another problem

the type of recurrence event is 3,you forget to do.
Merge pull request #70 from cisiqo/patch-1

Fix the Recurring Event of month on nth week nth day