Merge pull request #161 from notjames/schema-excptn-bug

Some effort to make invalid schema exceptions more clearly separate from invalid configs
diff --git a/locales.go b/locales.go
index ee41484..9446f84 100644
--- a/locales.go
+++ b/locales.go
@@ -268,14 +268,14 @@
 
 //Parse error
 func (l DefaultLocale) ParseError() string {
-	return `Expected: %expected%, given: Invalid JSON`
+	return `Expected: {{.expected}}, given: Invalid JSON`
 }
 
 const (
 	STRING_NUMBER                     = "number"
 	STRING_ARRAY_OF_STRINGS           = "array of strings"
 	STRING_ARRAY_OF_SCHEMAS           = "array of schemas"
-	STRING_SCHEMA                     = "schema"
+	STRING_SCHEMA                     = "valid schema"
 	STRING_SCHEMA_OR_ARRAY_OF_STRINGS = "schema or array of strings"
 	STRING_PROPERTIES                 = "properties"
 	STRING_DEPENDENCY                 = "dependency"