Reword isort configuration, add --combine-as

README.md

@@ -204,21 +204,27 @@ If a data structure literal (tuple, list, set, dict) or a line of "from"
 imports cannot fit in the allotted length, it's always split into one
 element per line.  This minimizes diffs as well as enables readers of
 code to find which commit introduced a particular entry.  This also
-makes *Black* compatible with [isort](https://pypi.org/p/isort/).
+makes *Black* compatible with [isort](https://pypi.org/p/isort/) with
+the following configuration.
+
+<details>
+<summary>A compatible `.isort.cfg`</summary>
 
-If you do wish to use *Black* alongside `isort`, you can pass the following
-command-line arguments to ensure compatible behaviour:
-```
-$ isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --line-width=88 [ file.py ]
-```
-Or use the equivalent directives in your isort config:
 ```
+[settings]
 multi_line_output=3
 include_trailing_comma=True
 force_grid_wrap=0
+combine_as_imports=True
 line_length=88
 ```
 
+The equivalent command line is:
+```
+$ isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --combine-as --line-width=88 [ file.py ]
+```
+</details>
+
 ### Line length
 
 You probably noticed the peculiar default line length.  *Black* defaults