[elpa] externals/async 20f7757c08 5/5: Update README

[ELPA Syncer]

branch: externals/async
commit 20f7757c08d998c79ca6c9d724c0500281dd512b
Author: Thierry Volpiatto <thievol@posteo.net>
Commit: Thierry Volpiatto <thievol@posteo.net>

    Update README
---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index 236de27c60..caf7ab3d94 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ Some async applications are provided as well with this 
package:
 * Dired-async
 * smtp-mail-async
 * async-bytecomp
+* async-package
 
 # Install
 
@@ -97,6 +98,12 @@ to do this, add to your init file:
 You can control which packages will compile async with 
`async-bytecomp-allowed-packages`.
 Set it to `'(all)` to be sure you will compile all packages asynchronously.
 
+## Install/upgrade packages asynchronously
+
+When using `async-bytecomp-package-mode` only compilation is done
+async.  To do all async (download and (re)install) the function
+`async-package-do-action` is provided, it is used by Helm packages UI.
+
 ## Send mails asynchronously with smtp mail async
 
 To enable this feature, ensure smtp-mail-async.el is loaded and use