Update README.md (#2504)
Update README.md (#2504)

Add a snippets section in README file with as first snippet the classic booking demo with two date picker
acrobat/bootstrap-datepicker,eternicode/bootstrap-datepicker,eternicode/bootstrap-datepicker,acrobat/bootstrap-datepicker,uxsolutions/bootstrap-datepicker,uxsolutions/bootstrap-datepicker