docs(autosave): add the document for manpage and README

README.md

@@ -63,7 +63,7 @@ auto_save=false
 - `paint_mode` is the mode activated at application start (must be one of: brush|text|rectangle|ellipse|arrow|blur, matching is case-insensitive)
 - `early_exit` is used to make the application exit after saving the picture or copying it to the clipboard
 - `fill_shape` is used to toggle shape filling (for the rectangle and ellipsis tools) on or off upon startup
-- `auto_save` is used to toggle auto saving on exit the application
+- `auto_save` is used to toggle auto saving of final buffer to `save_dir` on exit the application
 
 ## Keyboard Shortcuts
 

swappy.1.scd

@@ -66,6 +66,7 @@ The following lines can be used as swappy's default:
 	paint_mode=brush
 	early_exit=false
 	fill_shape=false
+	auto_save=false
 ```
 
 - *save_dir* is where swappshots will be saved, can contain env variables, when it does not exist, swappy attempts to create it first, but does not abort if directory creation fails
@@ -77,6 +78,7 @@ The following lines can be used as swappy's default:
 - *paint_mode* is the mode activated at application start (must be one of: brush|text|rectangle|ellipse|arrow|blur, matching is case-insensitive)
 - *early_exit* is used to make the application exit after saving the picture or copying it to the clipboard
 - *fill_shape* is used to toggle shape filling (for the rectangle and ellipsis tools) on or off upon startup
+- *auto_save* is used to toggle auto saving of final buffer to *save_dir* on exit the application
 
 
 # KEY BINDINGS