Adding marathonctl package list command for #2

Author: ashwanthkumar

cmd/package_list.go

@@ -0,0 +1,25 @@
+package cmd
+
+import (
+  "fmt"
+  "github.com/ashwanthkumar/marathonctl/packages"
+  "github.com/spf13/cobra"
+)
+
+var PackageList = &cobra.Command{
+  Use:   "list",
+  Short: "List all the package repositories",
+  Long:  "List all the package repositories",
+  Run: AttachHandler(listPackageRepositories),
+}
+
+func listPackageRepositories(args []string) (err error) {
+  for _, repository := range *packages.AllRepos {
+    fmt.Printf("%s\t%s\n", repository.Name, repository.Loc)
+  }
+  return err
+}
+
+func init() {
+  Package.AddCommand(PackageList)
+}