added info about mjpg-streamer compat and prettify

linters/Dockerfile

@@ -16,6 +16,9 @@ RUN pacman -Syu --noconfirm \
 		python-pip \
 		python-tox \
 		cppcheck \
+		npm \
 	&& (pacman -Sc --noconfirm || true)
 
+RUN npm install htmlhint -g
+
 CMD /bin/bash

linters/tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = cppcheck, flake8, pylint, mypy, vulture
+envlist = cppcheck, flake8, pylint, mypy, vulture, htmlhint
 skipsdist = true
 
 [testenv]
@@ -44,3 +44,7 @@ whitelist_externals = bash
 commands = bash -c 'vulture tools/*.py'
 deps =
 	vulture
+
+[testenv:htmlhint]
+whitelist_externals = htmlhint
+commands = htmlhint src/http/data/*.html