Download and extract the Elevated Command Prompt at right click context menu.zip, unzip it. You will get two registry file inside it. One is to add the command in right click context menu and another to remove it.
Double click the registry file (it is named ElevatedCmd.reg) and accept the security prompts and you will get a context menu to open the folder in elevated command prompt :
Click it and here we go:
To remove the option from right click context menu, simply double click to run the ElevatedCmdRemove.reg file included in the zip folder.