Add railsgirls Munich

(refs #51)

Author: bascht

source/images/content/projects/rails-girls-munich.png

@@ -20,6 +20,8 @@ body_class: index
         = link_to 'http://rubyberlin.github.io/code-of-conduct/' do
           = image_tag "content/projects/berlin-code-of-conduct.svg"
       %div.columns.small-12.large-4.project_image
+        = link_to 'http://railsgirls.com/munich2017.html' do
+          = image_tag "content/projects/rails-girls-munich.png"
       %div.columns.small-12.large-4.project_image
     %div.row
       %div.columns.small-12.large-12