How to make UEFI Bootable Ubuntu 15.04 USB stick on Windows 8.1?

Since many years we download the Ubuntu ISO and use the installed Ubuntu to make a Start up Disk from the ISO to install on the same or other machines. The Start up disk is a UEFI Bootable USB stick.

Today I faced a question on Ubuntuforums about how to make UEFI Bootable Ubuntu 15.04 USB stick on Windows 8.1. I am doing it now on My Lenovo G50-45 Laptop on Windows 8.1. I have the Ubuntu 15.04 ISO on the drive. I have downloaded and installed md5 Calculator Application from Windows Store. I have checked the md5sum of the ISO and it is same as in this file.

I have downloaded 7-Zip 9.38 .msi file from here.
I have a 2 GB USB stick formatted in FAT32 in the USB slot.
I have extracted the ISO on the USB stick using 7-Zip.
I right click on Start Button and select Disk Management and find that the USB drive is Healthy (Active, Primary Partition)
I right click on Start Button, select Power Options/Choose what the power button does and uncheck Fastboot (if exixts)
I reboot holding the shift key.
On reboot I select use a device and EFI USB device and get options on Grub Menu to run Ubuntu without install.