Add static location source

There were many requests to provide a static location source for systems
which don't normally move but where the existing location sources provide
poor location estimate.
An example of such system would be a desktop PC without WiFi or 3G modem.

So let's add a source that reads location from "geolocation" file in
@sysconfdir@ (normally /etc) to cover this use case.
This file is constantly monitored for changes during Geoclue operation
and the reported static location is updated accordingly.

The geoclue(5) man page should be consulted for the format description of
this file.

1 files changed, 3 insertions, 2 deletions

diff --git a/README.md b/README.md
index 6242120..b483157 100644
--- a/README.md
+++ b/README.md
@@ -6,13 +6,14 @@ is to make creating location-aware applications as simple as possible.
 
 Geoclue is Free Software, licensed under GNU GPLv2+.
 
-Geoclue comprises the following functionalities : 
+Geoclue comprises the following functionalities :
 - WiFi-based geolocation (accuracy: in meters)
 - GPS(A) receivers (accuracy: in centimeters)
-- GPS of other devices on the local network, e.g smartphones (accuracy: 
+- GPS of other devices on the local network, e.g smartphones (accuracy:
   in centimeters)
 - 3G modems (accuracy: in kilometers, unless modem has GPS)
 - GeoIP (accuracy: city-level)
+- Static location source (reads location from a system-wide file)
 
 WiFi-based geolocation makes use of 
 [Mozilla Location Service](https://wiki.mozilla.org/CloudServices/Location).