Update README.md (#85)

Author: deevroman

README.md

@@ -6,25 +6,25 @@ OSM Building Viewer
 
 ### Visualize an OSM Building in 3D
 
-Visualize an OSM Building from the live OSM data.
 To visualize a building tagged with a way, use the URL:
-https://beakerboy.github.io/OSMBuilding/index.html?id=[id]
+https://beakerboy.github.io/OSMBuilding?id=[id]
 
 If the building is a multipolygon, or a relation, use:
-https://beakerboy.github.io/OSMBuilding/index.html?type=relation&id=[id]
+https://beakerboy.github.io/OSMBuilding?type=relation&id=[id]
 
 ...replacing [id] with the actual id of the way or relation.
 
-Additional details will be displayed if "&info" is appended to the URL.
+Additional details will be displayed if `&info` is appended to the URL.
 
-Console debug messages can be printed to the screen if "&errorBox" is appended to the url. Helpful since mobile browsers often lack any inspection capability.
+Console debug messages can be printed to the screen if `&errorBox` is appended to the url. Helpful since mobile browsers often lack any inspection capability.
 
+Use the left mouse button to rotate the camera. To move, use the right one.
 
 Supports:
  * Ways with a building tag
  * Ways with building parts inside.
  * Building relations with way and/or multipolygon parts
- * Mulipolygon buildings
+ * Multipolygon buildings
  * Multipolygon building with multiple open ways which combine to a closed way.
 
 Roof Types:
@@ -43,3 +43,7 @@ Examples:
  * Building Relation [Burj Khalifa](https://beakerboy.github.io/OSMBuilding/index.html?type=relation&id=7584462)
  * Multipolygon with no parts - [Freer Art Gallery](https://beakerboy.github.io/OSMBuilding/index.html?type=relation&id=1029355)
  * Relation with multipolygon parts - [Leaning Tower of Pisa](https://beakerboy.github.io/OSMBuilding/index.html?type=relation&id=12982338)
+
+Specify the `osmApiUrl` parameter to use other OSM APIs. Examples:
+ * [OpenHistoricalMap](https://beakerboy.github.io/OSMBuilding/?id=2826540&osmApiUrl=https://api.openhistoricalmap.org/api/0.6&type=relation)
+ * [OpenGeofiction](https://beakerboy.github.io/OSMBuilding/?id=461819&osmApiUrl=https://opengeofiction.net/api/0.6&type=relation)