improve examples (closes #295)

README.md

@@ -53,8 +53,9 @@ Certain values can be set via environment variables, using the `-e` parameter on
 
 The following example value for `YTDL_OPTIONS` embeds English subtitles and chapter markers (for videos that have them), and also changes the permissions on the downloaded video and sets the file modification timestamp to the date of when it was downloaded:
 
-```json
-{"writesubtitles":true,"subtitleslangs":["en","-live_chat"],"postprocessors":[{"key":"Exec","exec_cmd":"chmod 0664","when":"after_move"},{"key":"Exec","exec_cmd":"touch","when":"after_move"}{"key":"FFmpegEmbedSubtitle","already_have_subtitle":false},{"key":"FFmpegMetadata","add_chapters":true}]}
+```yaml
+    environment:
+      - 'YTDL_OPTIONS={"writesubtitles":true,"subtitleslangs":["en","-live_chat"],"updatetime":false,"postprocessors":[{"key":"Exec","exec_cmd":"chmod 0664","when":"after_move"},{"key":"FFmpegEmbedSubtitle","already_have_subtitle":false},{"key":"FFmpegMetadata","add_chapters":true}]}'
 ```
 
 The following example value for `OUTPUT_TEMPLATE` sets:
@@ -65,7 +66,7 @@ The following example value for `OUTPUT_TEMPLATE` sets:
 
 ```yaml
     environment:
-      - "OUTPUT_TEMPLATE=%(playlist_title&Playlist |)S%(playlist_title|)S%(playlist_uploader& by |)S%(playlist_uploader|)S%(playlist_autonumber& - |)S%(playlist_autonumber|)S%(playlist_count& of |)S%(playlist_count|)S%(playlist_autonumber& - |)S%(uploader,creator|UNKNOWN_AUTHOR)S - %(title|UNKNOWN_TITLE)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d|UNKNOWN_DATE)S.%(ext)s"
+      - 'OUTPUT_TEMPLATE=%(playlist_title&Playlist |)S%(playlist_title|)S%(playlist_uploader& by |)S%(playlist_uploader|)S%(playlist_autonumber& - |)S%(playlist_autonumber|)S%(playlist_count& of |)S%(playlist_count|)S%(playlist_autonumber& - |)S%(uploader,creator|UNKNOWN_AUTHOR)S - %(title|UNKNOWN_TITLE)S - %(release_date>%Y-%m-%d,upload_date>%Y-%m-%d|UNKNOWN_DATE)S.%(ext)s'
 ```
 
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