From fbe048df52cf52323086727acfd2861c93e8e913 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Mon, 11 Sep 2017 15:50:10 -0400
Subject: Update README

---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index 326a826..d6a6c32 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ The parser recognizes the following grammar:
 
     Die ::= <an integer>
           | '(' Die ')'
+          | '[' Die ']'
           | Die 'd' Die
           | 'd' Die
           | Die ' + ' Die
@@ -152,6 +153,8 @@ Semantics are defined in terms of the `pool` function.
   many times as the value rolled on `E`. The pools generated by `D` are
   concatenated to generate the new pool. *Note:* if `E` evaluates to a
   negative number, the behavior is undefined.
+* `[D]` collects `D`'s dice pool - the generated dice pool contains a single
+  element, the result of `roll(D)`.
 
 Additionally:
 
-- 
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