feat(commands): more commands (#30)

- I wrote a scripts to copy and generate all commands missing in iris
from fig repo: https://github.com/withfig/autocomplete
- Add a new script to generate commands docs about which commands
currently are inside commands folder
377d4aac663590e504fe39a92eb4dac4cbd333b2
- Add more icons e64d4e70a1db61e62053460a882e093bd6373ab1

commands/ops/rbenv.go

@@ -0,0 +1,30 @@
+package ops
+
+import (
+	"github.com/versenilvis/iris/commands/core"
+)
+
+func init() {
+	core.Register(&core.Spec{
+		Name:        "rbenv",
+		Description: "List all available rbenv commands",
+		Subcommands: []core.Subcommand{
+			{Name: "commands", Description: "List all available rbenv commands"},
+			{Name: "global", Description: "Set or show the global Ruby version"},
+			{Name: "install", Description: "Install a Ruby version using ruby-build"},
+			{Name: "local", Description: "Set or show the local application-specific Ruby version"},
+			{Name: "rehash", Description: "Rehash rbenv shims (run this after installing executables)"},
+			{Name: "shell", Description: "Set or show the shell-specific Ruby version"},
+			{Name: "uninstall", Description: "Uninstall a specific Ruby version"},
+			{Name: "versions", Description: "List installed Ruby versions"},
+			{Name: "whence", Description: "List all Ruby versions that contain the given executable"},
+			{Name: "which", Description: "Display the full path to an executable"},
+		},
+		Options: []core.Option{
+			{Name: "--unset", Description: "List all available rbenv commands"},
+			{Name: "--sh", Description: "Set or show the global Ruby version"},
+			{Name: "--version", Description: "Show version of ruby-build"},
+			{Name: "-f", Description: "If the version does not exist, do not display an error message"},
+		},
+	})
+}