Require Elixir v0.1

Signed-off-by: chatgris <julien@stormz.me>
Upgrade Funnel

Signed-off-by: chatgris <julien@stormz.me>
Use Logger

Signed-off-by: chatgris <julien@stormz.me>
Upgrade plug and cowboy

Signed-off-by: chatgris <julien@stormz.me>