[travis.yml] add php-cs-fixer script
[travis.yml] add php-cs-fixer script


ryota-murakami/daily-tweet,ryota-murakami/daily-tweet,ryota-murakami/daily-tweet,ryota-murakami/tweet-pick,ryota-murakami/tweet-pick,ryota-murakami/tweet-pick,ryota-murakami/daily-tweet