Update QuizzyDatabase

String dataTable="create table QUIZDATA( "
                + "id"
                + " integer primary key autoincrement,"
                + "CATAGORY text,CATAGORY_NAME text,CATAGORY_IMG_PATH text,CHAP_ID text not null UNIQUE,CHAP_NAME text, CHAP_IMG_PATH text); ";

-Chapter id is now unique in QUIZDATA

-getListOfChaptersInCatagory(String CATAGORY_VAL) ==> functuion added
Merge pull request #20 from agarwaltushar34/patch-16

Update QuizzyDatabase