add missing files

app/views.py

@@ -0,0 +1,21 @@
+from django.shortcuts import render
+from django.http import HttpResponse
+
+
+def robots_txt(request):
+    txt = '''User-agent: *
+Disallow: 
+'''
+    return HttpResponse(txt, 'text/plain')
+
+    txt = '''User-agent: *
+Disallow: 
+Sitemap: {}
+'''.format(request.build_absolute_uri('/sitemap.xml'))
+    return HttpResponse(txt, 'text/plain')
+
+
+def sitemap_xml(request):
+    sitemap = ''
+    return HttpResponse(sitemap, 'application/xml')
+