Add an option to show calendar differently when a month starts on the first day of the week

[petethepig]

This is how it's implemented right now. When a month starts on the first day of the week, we show the previous month:

We should add an option to hide the previous month:

[raviji]

how to add this in code?

[petethepig]

Right now you would need to edit source code, replace this line with just:

if date.isAfter(firstDayOfMonth)

[raviji]

right now am using daterangepicker.js file, you have suggested in coffee script so bit confusing..