Fixed wrong examples for Set and Replace
Fixed wrong examples for Set and Replace

Fixed wrong order of params in set and replace function examples.
Fixed typo in replace function example.
jkrems/memcached,3rd-Eden/memcached,3rd-Eden/node-memcached,jolks/node-memcached,kbarbounakis/memcached,andrewbrereton/memcached,mbrukman/node-memcache-client,3rd-Eden/memcached,mbrukman/node-memcache-client,Starefossen/memcached,acarrasco/node-memcached,3rd-Eden/node-memcached,andrewbrereton/memcached,mgetz/memcached,jolks/node-memcached,Starefossen/memcached,mrlannigan/memcached,jkrems/memcached,XadillaX/node-memcached,mgetz/memcached,acarrasco/node-memcached,mrlannigan/memcached,XadillaX/node-memcached,fouber/node-memcached,fouber/node-memcached,kbarbounakis/memcached