add bash-it

dot_bash_it/completion/available/go.completion.bash

@@ -0,0 +1,15 @@
+# shellcheck shell=bash
+about-completion "completion for go command using gocomplete"
+
+# bash completion for go tool
+# https://github.com/posener/complete
+
+# Test `go version` because goenv creates shim scripts that will be found in PATH
+# but do not always resolve to a working install.
+if _command_exists go && go version &> /dev/null; then
+	# Same idea here, but no need to test a subcommand
+	if _command_exists gocomplete && gocomplete &> /dev/null; then
+		# finally, apply completion
+		complete -C gocomplete go
+	fi
+fi