MD036 should not trigger for emphasized list items (fixes #26).

lib/rules.js

@@ -803,6 +803,12 @@ module.exports = [
               return inBlockquote;
             }
           };
+        } else if (token.type === "list_item_open") {
+          return function inListItem(t) {
+            if (t.type !== "list_item_close") {
+              return inListItem;
+            }
+          };
         }
       }
       var state = base;

test/emphasis-not-header-in-blockquote.md

@@ -0,0 +1,23 @@
+# Heading
+
+> _Text_
+
+Text
+
+> _Text text text_
+
+Text
+
+> *Text*
+
+Text
+
+> *Text text text*
+
+Text
+
+> **Text**
+
+Text
+
+> **Text text text**

test/md036-emphasis-as-header.md

@@ -0,0 +1,17 @@
+# Simplified examples from issue #26
+
+* Item
+* **Emphasized item**
+* Item
+
+_Emphasis as header {MD036}_
+
+1. **Emphasized item**
+   * Item
+   * Item
+1. **Emphasized item**
+   * Item
+   * **Emphasized item**
+     * Item
+
+**Emphasis as header {MD036}**