[static-web] gis.gnome.org: Add tile provider info

[Marcus Lundblad <mlundblad src gnome org>]

commit edecb3c8a77d1d50c35c900985d7db13ed369d56
Author: Marcus Lundblad <ml update uu se>
Date:   Tue Nov 21 22:07:24 2017 +0100

    gis.gnome.org: Add tile provider info
    
    Upcoming Maps versions will dynamically display tile provider
    attribution in the About dialog when this is available in the
    service file.

 gis.gnome.org/v1/service.json |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gis.gnome.org/v1/service.json b/gis.gnome.org/v1/service.json
index dc0a5f1..4f9c0d6 100644
--- a/gis.gnome.org/v1/service.json
+++ b/gis.gnome.org/v1/service.json
@@ -1,4 +1,8 @@
 {
+    "tileProviderInfo": {
+       "name": "Mapbox",
+       "url": "https://www.mapbox.com";
+    },
     "tiles": {
        "street": {
             "id": "mapbox.streets-v4",