add docs

1 files changed, 3 insertions, 0 deletions

diff --git a/error.go b/error.go
index dc129cb..0ad5a42 100644
--- a/error.go
+++ b/error.go
@@ -1,9 +1,12 @@
 package sleepy
 
+// ErrorString is an Error that returns a string
+// representation.
 type ErrorString struct {
     s string
 }
 
+// Returns the string associated with this ErrorString.
 func (e *ErrorString) Error() string {
     return e.s
 }