Wiki update for new Geolocation functionality (#957)

docs/Geolocation.md

@@ -0,0 +1,42 @@
+# Geolocation
+
+- [Summary](#summary)
+- [Examples](#examples)
+- [Origin](#origin)
+- [Future Functionality](#future-functionality)
+
+# Summary
+
+Starting with `v0.14.0`, Brim now adds [geolocation](https://en.wikipedia.org/wiki/Geolocation) fields to the `conn` records
+of Zeek logs that are generated from imported pcaps.
+
+# Examples
+
+The following screenshot shows where the geolocation fields may be found in the Log Detail view:
+
+![Geolocation in Log Detail](media/Geolocation-Log-Detail.png)
+
+This screenshot shows an example aggregation that uses geolocation data:
+
+![Geolocation Aggregation](media/Geolocation-Aggregation.png)
+
+# Origin
+
+The data is added by the [geoip-conn](https://github.com/brimsec/geoip-conn) Zeek package. For details on the origin and accuracy
+of the geolocation data, see the [README](https://github.com/brimsec/geoip-conn/blob/master/README.md).
+
+# Future Functionality
+
+There are additional geolocation features in Brim that may be added in the future, depending on demand from the community.
+The following issues are currently being held open to gather interest:
+
+| **Issue**                                              |**Description**                                 |
+|--------------------------------------------------------|------------------------------------------------|
+| [brim/936](https://github.com/brimsec/brim/issues/936) | Geolocation map visualization                  |
+| [brim/954](https://github.com/brimsec/brim/issues/954) | Look up Geolocation data on-demand             |
+| [brim/955](https://github.com/brimsec/brim/issues/955) | Allow user to replace the Geolocation database |
+
+If you're interested in additional geolocation features, please follow the links to review these issues and click :+1: below the
+description on any of these features you'd like to see added. If you have additional feedback or ideas on this functionality,
+feel free to add a comment to the issues, or join our
+[public Slack](https://join.slack.com/t/brimsec/shared_invite/zt-cy34xoxg-hZiTKUT~1KdGjlaBIuUUdg) and talk to us. Thanks!

docs/Home.md

@@ -13,6 +13,7 @@ effective use of the Brim desktop application and related tools.
 
 - [[Zeek JSON Import]]
 - [[Zeek Customization]]
+- [[Geolocation]]
 
 ## Developer Resources
 

docs/_Sidebar.md

@@ -8,6 +8,7 @@
 
 - [[Zeek JSON Import]]
 - [[Zeek Customization]]
+- [[Geolocation]]
 
 **Developer Resources**