add jekyll-seo-tag

.travis.yml

@@ -42,7 +42,7 @@ before_install:
   - if [ "$CONFIG" == "Debug" ] && [ "$CXX" == "g++" ] && [ "$TRAVIS_OS_NAME" == linux ] ; then sudo apt-get install -y texlive-base ; fi
   - if [ "$CONFIG" == "Debug" ] && [ "$CXX" == "g++" ] && [ "$TRAVIS_OS_NAME" == linux ] ; then sudo apt-get install -y doxygen ; fi
   - if [ "$CONFIG" == "Debug" ] && [ "$CXX" == "g++" ] && [ "$TRAVIS_OS_NAME" == linux ] ; then sudo apt-get install -y ruby-dev ; fi
-  - if [ "$CONFIG" == "Debug" ] && [ "$CXX" == "g++" ] && [ "$TRAVIS_OS_NAME" == linux ] ; then sudo gem install jekyll -v 3.8.5 ; fi
+  - if [ "$CONFIG" == "Debug" ] && [ "$CXX" == "g++" ] && [ "$TRAVIS_OS_NAME" == linux ] ; then sudo gem install jekyll -v 3.8.5  && sudo gem install jekyll-seo-tag ; fi
 
 before_script:
   - mkdir build

docs/jekyll/_config.yml

@@ -1,4 +1,9 @@
-title: pmp-library
+title: 'The Polygon Mesh Processing Library'
+description: 'The official homepage of the Polygon Mesh Processing Libray, a simple and efficient modern C++ library for processing and visualizing polygon surface meshes.'
+url: 'https://www.pmp-library.org'
 sass:
   sass_dir: css
-  style:    compressed
+  style:    compressed
+
+plugins:
+  - jekyll-seo-tag

docs/jekyll/_includes/header.html

@@ -3,8 +3,13 @@
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
   <meta http-equiv="content-type" content="text/html; charset=utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
-
-  <title>{{ page.title }} - {{ site.title }}</title>
+  <title>
+    {% if page.title %}
+      {{ page.title }} - {{ site.title }}
+    {% else %}
+      {{ site.title }}
+    {% endif %}
+  </title>
 
   <link rel="stylesheet" href="/css/style.css">
 
@@ -21,4 +26,6 @@
 
     gtag('config', 'UA-112654893-1');
   </script>
+
+  {% seo title=false %}
 </head>

docs/jekyll/index.html

@@ -1,6 +1,5 @@
 ---
 layout: default
-title: Home
 ---
 
 <div class="jumbotron jumbotron-fluid no-pad">