Update jquery.simple-dtpicker.js

fix default month
display month name in header
set options.current to input val

currentDate was unused
Merge pull request #20 from dsims/master

Bug fixes and enhancement, fixed #17 #18 #19
Update README: Thankyou for dsims
Merge branch 'master' of github.com:mugifly/jquery-simple-datetimepicker into develop/1.1.0