use time.Sleep instead of runtime.Gosched
use time.Sleep instead of runtime.Gosched

Since gosched only yields once, it doesn't seem to work
when there are several goroutines running. sleeping 10ms
seems to do the job.

Signed-off-by: Max Brunsfeld <8ee73e75b50cc292b5052b11f2ca25336d3e974e@pivotallabs.com>

arschles/timer,pivotal-golang/timer