Add Travis CI config

Author: anishathalye

.ci/url_ignore

@@ -0,0 +1 @@
+/tree/

.travis.yml

@@ -0,0 +1,15 @@
+language: ruby
+before_install:
+  - gem update --system # necessary, see https://bundler.io/blog/2019/05/14/solutions-for-cant-find-gem-bundler-with-executable-bundle.html
+before_script:
+  - gem install html-proofer
+script:
+  - bundle exec jekyll build
+  - >-
+    htmlproofer ./_site
+    --check-html
+    --check-favicon
+    --enforce-https
+    --check-external-hash
+    --check-img-http
+    --url-ignore $(paste -sd ',' < .ci/url_ignore)

README.md

@@ -1,4 +1,4 @@
-# Adversarial Example Defenses
+# Adversarial Example Defenses [[![Build Status](https://travis-ci.com/robust-ml/robust-ml.github.io.svg?branch=master)](https://travis-ci.com/robust-ml/robust-ml.github.io)]
 
 A catalog of defenses against adversarial examples, paired with attacks that
 break them (where applicable).

_config.yml

@@ -19,6 +19,7 @@ exclude:
   - Gemfile
   - Gemfile.lock
   - README.md
+  - vendor
 
 plugins_dir:
   - "jekyll-github-metadata"

_layouts/default.html

@@ -65,7 +65,7 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
     <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
     <script type="text/javascript" src="https://cdn.datatables.net/v/bs4/dt-1.10.18/fh-3.1.4/r-2.2.2/datatables.min.js" crossorigin="anonymous"></script>
-    <script type="text/javascript" src="/vendor/js/dataTables.rowsGroup.js"></script>
+    <script type="text/javascript" src="/js/dataTables.rowsGroup.js"></script>
     <nav class="navbar navbar-expand-sm navbar-dark bg-dark mb-4">
       <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
         <span class="navbar-toggler-icon"></span>