Programing ESP8266 ESP-12E standalone with a Arduino instead of URT

Hi there everyone.
After an accident involving Jack and Coke, my urt programer is now dead. I was wondering if there is any otherway of programing an ESP8266 ESP-12E to work standalone. That meaning that I can disconnect the arduino and use ESP-12E normaly.

Any guides or detailed instructions with example code would be really appreciated.

Don't do drugs....
Who is jack? Have him pay... :)...

What is an URT programer?