embed 
Embedding files into Go programs
Synopsis
Embed provides an http.FileSystem implementation. The FileSystem allows arbitrary file data to be added to it, and optionally fall back to the operating system when a requested named file isn't found.
An embed command is provided for easy insertion of data into the FileSystem. It generates a Go file that includes the contents of all files or directories passed to it. It also supports directory recursion view the '/...' suffix.