Added signup html page

main.py

@@ -151,7 +151,9 @@ def createChat():
 # Returns html signup page
 @app.route('/signup', methods = ['GET'])
 def signup():
-    pass
+    token = request.cookies.get('auth_token', 'none')
+    if (token == 'none'):
+        return render_template('signup.html', appName=appName, githubUrl=github_auth_endpoint)
 
 # Index page
 # If logged in return home menu (Or logout if token is expired),