Add glide.yaml and vendor deps

vendor/github.com/docker/engine-api/client/plugin_enable.go

@@ -0,0 +1,14 @@
+// +build experimental
+
+package client
+
+import (
+	"golang.org/x/net/context"
+)
+
+// PluginEnable enables a plugin
+func (cli *Client) PluginEnable(ctx context.Context, name string) error {
+	resp, err := cli.post(ctx, "/plugins/"+name+"/enable", nil, nil, nil)
+	ensureReaderClosed(resp)
+	return err
+}