lexer: runes.Reader renamed to lexer.Reader

Signed-off-by: Alejandro Mery <amery@jpi.io>

lexer/lexer.go

@@ -0,0 +1,2 @@
+// Package lexer provides basic helpers to implement parsers
+package lexer

lexer/reader.go

@@ -1,4 +1,4 @@
-package runes
+package lexer
 
 import (
 	"bytes"

runes/docs.go

@@ -1,2 +0,0 @@
-// Package runes helps us work with runes
-package runes