Reformatted errors

Author: cmaglie

common/formatter/errors.go

@@ -62,7 +62,7 @@ func (err ErrorMessage) String() string {
 	if err.CausedBy == nil {
 		return err.Message
 	}
-	return err.Message + " (" + err.CausedBy.Error() + ")"
+	return "Error: " + err.CausedBy.Error() + "\n" + err.Message
 }
 
 // PrintErrorMessage formats and prints info about an error message.

common/formatter/errors_test.go

@@ -43,7 +43,8 @@ func ExamplePrintError() {
 
 	// Output:
 	// error message
-	// outer error message (inner error message)
+	// Error: inner error message
+	// outer error message
 	// {"Message":"error message","Cause":""}
 	// {"Message":"outer error message","Cause":"inner error message"}
 }