Add Dick Porter to AUTHORS
Add Dick Porter to AUTHORS

haosdent/rbtools,1tush/rbtools,Khan/rbtools,halvorlu/rbtools,datjwu/rbtools,bcelary/rbtools,halvorlu/rbtools,davidt/rbtools,haosdent/rbtools,davidt/rbtools,reviewboard/rbtools,datjwu/rbtools,haosdent/rbtools,beol/rbtools,clach04/rbtools,beol/rbtools,davidt/rbtools,Khan/rbtools,datjwu/rbtools,beol/rbtools,reviewboard/rbtools,clach04/rbtools_0.4.1,clach04/old_rbtools_0.3.2,halvorlu/rbtools,reviewboard/rbtools