Document timeout option (#141)

Co-authored-by: Sam Matthews <[email protected]>

readme.md

@@ -64,8 +64,13 @@ The following example will distribute tiles to the second part out of 4 total pa
 $ mapbox-tile-copy ~/data/my-tiles.mbtiles s3://my-bucket/parallel/{z}/{x}/{y} --part 1 --parts 4
 ```
 
-Collect tile size statistics and dump to your local tmp dir named `/tmp/<tmpdirpath>/tilelive-bridge-stats.json`
+You can add extra parameters supported by [tilelive-s3](https://github.com/mapbox/tilelive-s3) onto the end of the S3 URL. For instance, to extend the default HTTP timeout of 2000ms:
+```sh
+$ mapbox-tile-copy ~/data/my-tiles.mbtiles s3://my-bucket//{z}/{x}/{y}?timeout=10000
 ```
+
+Collect tile size statistics and dump to your local tmp dir named `/tmp/<tmpdirpath>/tilelive-bridge-stats.json`
+```sh
 $ BRIDGE_LOG_MAX_VTILE_BYTES_COMPRESSED=1 mapbox-tile-copy ~/data/my-tiles.mbtiles s3://my-bucket/folder/mbtiles/{z}/{x}/{y}
 ```