Update doc.conf.py

Adding more extensions

docs/doc.conf.py

@@ -1,5 +1,15 @@
+import os
+import sys
+import re
+
 import juliadoc
 
-extensions = ['juliadoc.julia', 'juliadoc.jlhelp']
+extensions = ['sphinx.ext.mathjax',
+              'juliadoc.julia',
+              'juliadoc.jldoctest',
+              'juliadoc.jlhelp']
+
+master_doc = 'index'
+
 html_theme_path = [juliadoc.get_theme_dir()]
 html_sidebars = juliadoc.default_sidebars()