wic: Add wic overview to help system

Add a general overview of wic to the help system as 'wic overview',
along with some introductory examples.

(From OE-Core rev: fa108caaa53878152e4856d32ce1ab7fe3802287)

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 12 insertions, 9 deletions

diff --git a/scripts/wic b/scripts/wic
index ac3ed160d9..5453750703 100755
--- a/scripts/wic
+++ b/scripts/wic
@@ -240,15 +240,18 @@ wic_help_topic_usage = """
 """
 
 subcommands = {
-    "create":  [wic_create_subcommand,
-                wic_create_usage,
-                wic_create_help],
-    "list":    [wic_list_subcommand,
-                wic_list_usage,
-                wic_list_help],
-    "plugins": [wic_help_topic_subcommand,
-                wic_help_topic_usage,
-                wic_plugins_help],
+    "create":   [wic_create_subcommand,
+                 wic_create_usage,
+                 wic_create_help],
+    "list":     [wic_list_subcommand,
+                 wic_list_usage,
+                 wic_list_help],
+    "plugins":  [wic_help_topic_subcommand,
+                 wic_help_topic_usage,
+                 wic_plugins_help],
+    "overview":  [wic_help_topic_subcommand,
+                 wic_help_topic_usage,
+                 wic_overview_help],
 }