http://thescienceofdeduction.co.uk/hidden-messages/hiddenmessage3
As for where the pigs live, they live in the yard. The police are at Scotland Yard. What's your fucking point, professor?*
Sherlock was obvious, found, and you were easy.
Second and third words gave me a bit of trouble because I thought they were one word, but once I realized they were two, everything pretty much followed by process of elimination.
Elementary.
*As it turns out, the code itself is called "pig pen". Well, I like my interpretation better.