(Yaf >=1.0.0)
Defaultly, Yaf_Router only have a Yaf_Route_Static as its default route.
And Yaf_Route_Static is designed to handle the 80% requirement.
please *NOTE* that it is unnecessary to instance a Yaf_Route_Static, also unecesary to add it into Yaf_Router's routes stack, since there is always be one in Yaf_Router's routes stack, and always be called at the last time.