Added zsh completion

_vcsh

+#compdef vcsh
+
+_arguments \
+	':subcommand:((
+		help\:"display help"
+		list\:"list all repos"
+		use\:"use/enter repo"
+		run\:"run command on repo"
+		init\:"init & clone from repo"
+		clone\:"clone from repo"
+		exit\:"exit repo"
+	))'