api changes in v2

[Marshall Schor]

The process method in v1 takes 2 args.  in V2 it takes just one arg - 
the result specification arg is now available using 
getResultSpecification() assuming someone has called the 
setResultSpecification() and the annotator impl has saved this in a 
local variable.  Is this correct?

I'll start a web page on the wiki to collect documentation re: changes 
in v2.

-Marshall