Typos in parser’s description

lib/parser/index.js

@@ -96,13 +96,13 @@ class Rule {
  * some expression types are not supported or have stricker rule regarding
  * types they support.
  *
- * For type checking is left for runtime evaluation when the type cannot be
- * inferred (snapshot value and auth properties).
+ * Some expression allow type checking to be delayed untill runtime evaluation
+ * when the type cannot be inferred (snapshot value and auth properties).
  *
  * @param  {string}        rule         Rule to parse
  * @param  {array<string>} wildchildren List of wildchildren available
  * @param  {Boolean}       isWrite      Is rule meant for a write operation
- * @return {toString: function(): string, evaluate: function(object): any, inferredType: string}
+ * @return {Rule}
  */
 exports.parse = function(rule, wildchildren, isWrite) {
   return new Rule(rule, wildchildren, isWrite);