Changed all of the *_destroy commands to *_delete.
Changed all of the *_destroy commands to *_delete.

These are only in the docs thus far; they haven't actually been
implmented yet.

Issue #25 makes me very nervous about using _destroy going forward; it
would be too easy for someone to fat-finger and cause serious breakage.
We should have naming conventions that are less error prone.

meng-sun/hil,henn/haas,henn/hil_sahil,SahilTikale/haas,kylehogan/haas,meng-sun/hil,lokI8/haas,henn/hil,henn/hil,apoorvemohan/haas,CCI-MOC/haas,kylehogan/hil,SahilTikale/switchHaaS,kylehogan/hil,apoorvemohan/haas,henn/hil_sahil