Ability to add extra custom CSS (#22)

Khosrow Moossavi

14.51.2018 9a070c238083e03ebbe799f6eb958381531fbbc8

 exampleSite/config.toml

@@ -23,6 +23,9 @@
    hideCredits = false
    hideCopyright = false

    # Custom CSS
   custom_css = []

[[params.social]]
    name = "Github"
    weight = 1