Merge pull request #61 from 8fold/feed-rss

Update composer.json

Author: joshbruce

composer.json

@@ -12,7 +12,7 @@
   "require": {
     "php": "~7.0",
     "8fold/php-shoop-shelf": "~0.5.0",
-    "8fold/php-html-spec": "dev-master@dev",
+    "8fold/php-html-spec": "~0.0.0",
     "8fold/commonmark-abbreviations": "~1.0",
     "8fold/commonmark-accordions": "~1.0",
     "nesbot/carbon": "~2.36"