Pretty print JSON cache

Signed-off-by: Markus Birth <markus@birth-online.de>

main.py

@@ -73,7 +73,7 @@ class ClearSky():
             else:
                 r = requests.get(url).json()
                 with open(cachefile, "wt") as f:
-                    json.dump(r, f)
+                    json.dump(r, f, indent=2)
                 sleep(0.20)    # Poor man's way of making sure to not go over 5 requests per second
             data_len = len(r["data"][data_key]) if data_key else len(r["data"])
             result += r["data"][data_key] if data_key else r["data"]