Add font-family

Author: ramiy

src/.vuepress/styles/index.styl

@@ -4,6 +4,9 @@
  * ref: https://v1.vuepress.vuejs.org/config/#index-styl
  */
 
+h1, h2, h3, h4, h5, h6, .sidebar-heading, .site-name, .nav-link
+  font-family 'Baloo Tamma 2'
+
 .theme-container .home
   padding-top 0