Added Codes And Reservation Status

I've added the State Codes and PC codes as per Anand Chitipothu's data: (https://github.com/anandology/opendata-ge2014/blob/master/data/parliamentary_constituencies.tsv) 	 and The reservation status as per wikipedia: (http://en.wikipedia.org/wiki/List_of_Constituencies_of_the_Lok_Sabha)