Imports of http2 command

PathSynopsis
github.com/gin-gonic/ginPackage gin implements a HTTP web framework called gin.
html/templatePackage template (html/template) implements data-driven templates for generating HTML output safe against code injection.
logPackage log implements a simple logging package.
net/httpPackage http provides HTTP client and server implementations.
osPackage os provides a platform-independent interface to operating system functionality.