Implement "kubedb edit"

docs/kubedb/README.md

@@ -12,7 +12,8 @@ Basic Commands (Beginner):
 
 Basic Commands (Intermediate):
   get         Display one or many resources
-  delete      Delete resources by filenames, stdin, resources and names, or by resources and label selector
+  edit        Edit a resource on the server
+  delete      Delete resources by file names, stdin, resources and names, or by resources and label selector
 
 Troubleshooting and Debugging Commands:
   describe    Show details of a specific resource or group of resources

docs/kubedb/edit.md

@@ -0,0 +1,31 @@
+# kubedb edit
+
+## Example
+
+##### Help for edit command
+
+```bash
+$ kubedb edit --help
+
+Edit a resource from the default editor.
+
+The edit command allows you to directly edit any API resource you can retrieve via the command line tools. It will open
+the editor defined by your KUBEDB _EDITOR, or EDITOR environment variables, or fall back to 'nano'
+
+Examples:
+  # Edit the elastic named 'elasticsearch-demo':
+  kubedb edit es/elasticsearch-demo
+
+  # Use an alternative editor
+  KUBEDB_EDITOR="nano" kubedb edit es/elasticsearch-demo
+
+Options:
+      --all=false: [-all] to select all the specified resources.
+  -o, --output='yaml': Output format. One of: yaml|json.
+  -l, --selector='': Selector (label query) to filter on.
+
+Usage:
+  kubedb edit (RESOURCE/NAME) [flags] [options]
+
+Use "kubedb edit options" for a list of global command-line options (applies to all commands).
+```

pkg/cmd/cmd.go

@@ -31,6 +31,7 @@ func NewKubedbCommand(in io.Reader, out, err io.Writer) *cobra.Command {
 			Message: "Basic Commands (Intermediate):",
 			Commands: []*cobra.Command{
 				NewCmdGet(out, err),
+				NewCmdEdit(out, err),
 				NewCmdDelete(out, err),
 			},
 		},