add new file js/calculate.js
move calculate.js to js/calculate.js
add URL of html
1. move calculate.js to js/calculate.js
2. modify index.html with inputting and calculating money
Merge branch 'cal' of https://github.com/lanxan/Idiot-billing into cal
can show the date
can use calendar(click pre and next choose date)
add init.php & savedata.php
Update savedata.php

receive by post
Merge branch 'php' of https://github.com/lanxan/Idiot-billing into cal
index.html debug and add new file js/connectDB.js