Update README.md
travis debug
track travis branch on CI
Merge branch 'master' into travis
travis debug
travis debug
install latest wkhtmltox
install ttfautohint; run ctest with output-on-failure
check more c++11 features

use local browser to test
install selenium in travis
install selenium through pip in travis
travis debug

Update README.md

track travis branch on CI

install ttfautohint; run ctest with output-on-failure

check more c++11 features

use local browser to test

install selenium through pip in travis

refactor tests

use html instead of png as reference
fix test