add a convience method for configuring memcache in multiple instance admins.
use hasModule() and getModule() tcheck and access memcache.
add a note to clarify why we're resetting memcache server and app_ns
Merge pull request #3 from isaacgrant/mulitple-instance-memcache-cleanup

add a convience method for configuring memcache in multiple instance admins.
prepare for release of 2.0.2 | package party