Read contents from stdin and create a gist from it

Upload code to https://gist.github.com.
More information: <https://github.com/defunkt/gist>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

{{echo "hello world"}} | gist

click the source code to copy install gist on any operating system with command-not-found.com