Fix root YAML variable in bin/lesson_initialize.py

Close #186

Author: rgaiacs

LICENSE.md

@@ -1,7 +1,7 @@
 ---
 layout: page
 title: "Licenses"
-permalink: /license/
+root: .
 ---
 ## Instructional Material
 

bin/lesson_initialize.py

@@ -263,6 +263,7 @@
 ROOT_REFERENCE_MD = '''\
 ---
 layout: reference
+root: .
 ---
 
 ## Glossary
@@ -274,13 +275,15 @@
 ---
 layout: page
 title: Setup
+root: .
 ---
 FIXME
 '''
 
 ROOT_AIO_MD = '''\
 ---
 layout: page 
+root: .
 ---
 <script>
   window.onload = function() {