Merge pull request #21 from apigee/mask-specific-fields

Mask specific fields
diff --git a/analytics/index.js b/analytics/index.js
index 23c57c7..05d2133 100644
--- a/analytics/index.js
+++ b/analytics/index.js
@@ -9,6 +9,15 @@
       record.apiproxy = res.proxy.name;
       record.apiproxy_revision = res.proxy.revision;
     }
+
+    if(config.mask_request_url) {
+      record.request_url = config.mask_request_url;  
+    }
+
+    if(config.mask_request_path) {
+      record.request_path = config.mask_request_path;
+    }
+    
     cb(null, record);
   };