renamed extraTikzpictureCode to extraCode and insert content at beginning of file
renamed extraTikzpictureCode to extraCode and insert content at beginning of file

PeterPablo/matlab2tikz,nidrosianDeath/matlab2tikz,matlab2tikz/matlab2tikz,egeerardyn/matlab2tikz,miscco/matlab2tikz,matlab2tikz/matlab2tikz,LJeub/matlab2tikz,RPeschke/matlab2tikz,okomarov/matlab2tikz,okomarov/matlab2tikz,egeerardyn/matlab2tikz