Add gerrit widget

vendor/github.com/olebedev/config/doc.go

@@ -6,7 +6,7 @@
 Package config provides convenient access methods to configuration stored as
 JSON or YAML.
 
-Let's start with a simple YAML example:
+Let's start with a simple YAML file config.yml:
 
     development:
       database:
@@ -23,6 +23,12 @@ Let's start with a simple YAML example:
 We can parse it using ParseYaml(), which will return a *Config instance on
 success:
 
+    file, err := ioutil.ReadFile("config.yml")
+    if err != nil {
+		panic(err)
+    }
+    yamlString := string(file)
+
     cfg, err := config.ParseYaml(yamlString)
 
 An equivalent JSON configuration could be built using ParseJson():