Changed styling for options list
Changed styling for options list

Now it is defined to be at least 100% of the width of the button.

andres-torres-marroquin/jquery.selectBoxIt.js,crehana/jquery.selectBoxIt.js,nikkyb8/jquery.selectBoxIt.js,andres-torres-marroquin/jquery.selectBoxIt.js,debrajrakshit/jquery.selectBoxIt.js,gitkiselev/jquery.selectBoxIt.js,debrajrakshit/jquery.selectBoxIt.js,gfranko/jquery.selectBoxIt.js,gitkiselev/jquery.selectBoxIt.js,crehana/jquery.selectBoxIt.js,nikkyb8/jquery.selectBoxIt.js,gfranko/jquery.selectBoxIt.js