Add caminus username validation api

api/urls.py

@@ -0,0 +1,9 @@
+from django.conf.urls.defaults import patterns, include, url
+from piston.resource import Resource
+import handlers
+
+whitelistHandler = Resource(handlers.WhitelistHandler)
+
+urlpatterns = patterns('api',
+    url(r'^validate/(?P<username>.*)$', whitelistHandler)
+)