pw: improve readme and add note on git-pw version

Older git-pw versions have some mbox decoding issues which I ran into,
but this got fixed in a more recent version, therefore add a note to
the README:

  $ git pw series download 133745 mbox.i
  Server version missing
  You should provide the server version in the URL configured via git-config or --server
  This will be required in git-pw 2.0
  Traceback (most recent call last):
  File "/usr/bin/git-pw", line 10, in <module>
    sys.exit(cli())
  File "/usr/lib64/python2.7/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/usr/lib64/python2.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/lib64/python2.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/lib64/python2.7/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/lib64/python2.7/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/git_pw/series.py", line 55, in download_cmd
    output.write(api.get(series['mbox']).text)
  UnicodeEncodeError: 'ascii' codec can't encode characters in position 4418-4420: ordinal not in range(128)

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 11 insertions, 4 deletions

diff --git a/README b/README
index bb96e42..fe097f8 100644
--- a/README
+++ b/README
@@ -40,6 +40,11 @@ to netdev:
   $ git config --global pw.project 'netdev'
   $ git config --global pw.token 'API-TOKEN'
 
+Note that git-pw must be at least version 1.7.0 or higher as earlier
+versions have issues to decode received mboxes in some cases:
+
+  https://github.com/getpatchwork/git-pw/issues/52
+
 2. quilttools aka mb2q:
 ~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -53,13 +58,15 @@ normalization.
 3. l2md:
 ~~~~~~~~
 
-Example .l2mdconfig for lists I follow in this repo, needs to be in home
-directory. The l2md repository also has additional information with
-regards to mutt integration and a service unit file for letting it run
-in the background automatically. I'm using l2md for fetching new emails
+I'm using l2md for fetching new emails via lore.kernel.org git archives
 and msmtp for sending them. My l2md feeds into mutt, and msmtp is used
 for mutt as well as git-send-email.
 
+Example .l2mdconfig for lists I follow in this repo, needs to be in
+home directory. The l2md repository also has additional information
+with regards to mutt and procmail integration and a service unit file
+for letting it run in the background automatically.
+
 Patch handling:
 ---------------