Add favicon.ico

[msoedov]

[GIN] 2017/11/12 - 17:34:18 | 200 |     189.572µs | 127.0.0.1 |   GET     /slides.md
[GIN] 2017/11/12 - 17:34:18 | 404 |       6.347µs | 127.0.0.1 |   GET     /favicon.ico

[servusoft]

@msoedov:
I think,, it is now possible to show the favicon.ico like:

https://github.com/msoedov/hacker-slides/blob/master/main.go#L40

it may seems like:
r.Static("/favicon.ico", "./slides/favicon.ico") or
r.Static("/favicon.ico", "./slides/images/favicon.ico")

[servusoft]

just tried, but it not works.
the /favicon.ico should have his own router.

[msoedov]

Just added a base64 favicon #40, no changes to router