updated README for pip/placeholder configuration

README.md

@@ -45,7 +45,7 @@ The API recognizes the following properties under the top-level `api` key in you
 |`legacyUrl`|*no*||the url to redirect to in case the user does not specify a version such as `v1`
 |`relativeScores`|*no*|true|if set to true, confidence scores will be normalized, realistically at this point setting this to false is not tested or desirable
 |`accessLog`|*no*||name of the format to use for access logs; may be any one of the [predefined values](https://github.com/expressjs/morgan#predefined-formats) in the `morgan` package. Defaults to `"common"`; if set to `false`, or an otherwise falsy value, disables access-logging entirely.|
-|`pipService`|*yes*||full url to the pip service to be used for coarse reverse queries. if missing, which is not recommended, the service will default to using nearby lookups instead of point-in-polygon.|
+|`services`|*no*||service definitions for [point-in-polygon](https://github.com/pelias/pip-service) and [placholder](https://github.com/pelias/placeholder) services.  If missing (which is not recommended), the new point-in-polygon and placeholder services will not be called.|
 
 Example configuration file would look something like this:
 
@@ -68,7 +68,14 @@ Example configuration file would look something like this:
     "legacyUrl": "pelias.mapzen.com",
     "relativeScores": true,
     "textAnalyzer": "libpostal",
-    "pipService": "http://mypipservice.com/3000"
+    "services": {
+      "pip": {
+        "url": "http://mypipservice.com:3000"
+      },
+      "placeholder": {
+        "url": "http://myplaceholderservice.com:5000"
+      }
+    }
   },
   "interpolation": {
     "client": {