add instance

instance.go

@@ -0,0 +1,19 @@
+package mastodon
+
+// Instance hold information for mastodon instance.
+type Instance struct {
+	URI         string `json:"uri"`
+	Title       string `json:"title"`
+	Description string `json:"description"`
+	EMail       string `json:"email"`
+}
+
+// GetInstance return Instance.
+func (c *Client) GetInstance() (*Instance, error) {
+	var instance Instance
+	err := c.doAPI("GET", "/api/v1/instance", nil, &instance)
+	if err != nil {
+		return nil, err
+	}
+	return &instance, nil
+}