Add support to configure webhook_timeout in gitlab.yaml

Created by: wesgurn

Our Gitlab instance needed the ability to increase the webhook_timeout used by HTTParty. It was hardcoded at 10 and I moved it to a gitlab.yaml file as a config variable

Webhook settings

webhook_timeout: 30 # default: 10 - Number of seconds to wait for HTTP response after sending webhook HTTP POST request

doc/api/groups.md

@@ -8,12 +8,12 @@ GET /groups
 ```json
 [
-    {
-        "id": 1,
-        "name": "Foobar Group",
-        "path": "foo-bar",
-        "owner_id": 18
-    }
+  {
+    "id": 1,
+    "name": "Foobar Group",
+    "path": "foo-bar",
+    "owner_id": 18
+  }
 ]
 ```
@@ -54,4 +54,92 @@ POST  /groups/:id/projects/:project_id
 Parameters:
 + `id` (required) - The ID of a group
-+ `project_id (required) - The ID of a project
++ `project_id` (required) - The ID of a project
+
+
+## Remove group
+
+Removes group with all projects inside.
+
+```
+DELETE /groups/:id
+```
+
+Parameters:
+
++ `id` (required) - The ID of a user group
+
+
+## Group members
+
+
+**Group access levels**
+
+The group access levels are defined in the `Gitlab::Access` module. Currently, these levels are recognized:
+
+```
+  GUEST     = 10
+  REPORTER  = 20
+  DEVELOPER = 30
+  MASTER    = 40
+  OWNER     = 50
+```
+
+### List group members
+
+Get a list of group members viewable by the authenticated user.
+
+```
+GET /groups/:id/members
+```
+
+```json
+[
+  {
+    "id": 1,
+    "username": "raymond_smith",
+    "email": "ray@smith.org",
+    "name": "Raymond Smith",
+    "state": "active",
+    "created_at": "2012-10-22T14:13:35Z",
+    "access_level": 30
+  },
+  {
+    "id": 2,
+    "username": "john_doe",
+    "email": "joh@doe.org",
+    "name": "John Doe",
+    "state": "active",
+    "created_at": "2012-10-22T14:13:35Z",
+    "access_level": 30
+  }
+]
+```
+
+### Add group member
+
+Adds a user to the list of group members.
+
+```
+POST /groups/:id/members
+```
+
+Parameters:
+
++ `id` (required) - The ID of a group
++ `user_id` (required) - The ID of a user to add
++ `access_level` (required) - Project access level
+
+
+### Remove user team member
+
+Removes user from user team.
+
+```
+DELETE /groups/:id/members/:user_id
+```
+
+Parameters:
+
++ `id` (required) - The ID of a user group
++ `user_id` (required) - The ID of a group member