Add docs for argument when retrieving container logs

Signed-off-by: Josh Purvis <jpurvis@kwantera.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/docs/api.md b/docs/api.md
index b6cc9f0..00ccabc 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -676,6 +676,7 @@ output as it happens.
 * stream (bool): Stream the response
 * timestamps (bool): Show timestamps
 * tail (str or int): Output specified number of lines at the end of logs: `"all"` or `number`. Default `"all"`
+* since (datetime or int): Show logs since a given datetime or integer epoch (in seconds)
 
 **Returns** (generator or str):