Add comments on some exported resources

pkg/output/json.go

@@ -22,6 +22,7 @@ type jsono struct {
 	nValid, nInvalid, nErrors, nSkipped int
 }
 
+// JSON will output the results of the validation as a JSON
 func JSON(w io.Writer, withSummary bool, verbose bool) Output {
 	return &jsono{
 		w:           w,

pkg/output/text.go

@@ -14,6 +14,7 @@ type text struct {
 	nValid, nInvalid, nErrors, nSkipped int
 }
 
+// Text will output the results of the validation as a text
 func Text(w io.Writer, withSummary, verbose bool) Output {
 	return &text{
 		w:           w,