Merge #934: Cherry-pick part of 826

04e9f6b README: add --check-html to htmlproofer (Sjors Provoost)
488ae09 Satisfy newer html-proofer (Sjors Provoost)

Pull request description:

  Cherry-picks two commits from #826 (which needs rebase, and is dependant on infra updates), which are correct, and can be merged now.

ACKs for top commit:
  stickies-v:
    ACK 04e9f6b

Tree-SHA512: 84048d6acd9126c75583e5d891a737e9ff65652ac8f30df160d66487d858ce5b917d401edbf73c0c882c4139bc7f63ff07c0790cc612fd5762c40603a4d9beba

Author: fanquake

README.md

@@ -73,7 +73,7 @@ pages dated in the future (such as prepared release announcements).
 To test the site:
 
     bundle exec jekyll build --future --drafts --unpublished
-    bundle exec htmlproofer --disable-external --url-ignore '/^\/bin/.*/' ./_site
+    bundle exec htmlproofer --check-html --disable-external --url-ignore '/^\/bin/.*/' ./_site
 
 The additional parameters to `jekyll build` ensure that all possible
 pages are built and checked.

logs/2016-05-zurich-meeting-notes.html

@@ -502,7 +502,7 @@ <h3>Encrypted transactions and UTXO set commitments</h3>
 
 <p>Bundle committed transactions with a hard-fork, and this different reduced SPV model. Luke disagrees that they implement SPV because they don't even do fraud proofs. </p>
 
-<p><a name="lightning-network-key-derivation" /></p>
+<p><a name="lightning-network-key-derivation"></a></p>
 
 <h3>Lightning Network key derivation function</h3>