chore(package): update textlint-tester to version 2.1.0 (#56)
chore(package): update textlint-tester to version 2.1.0 (#56)

https://greenkeeper.io/
textlint-ja/textlint-rule-preset-JTF-style,azu/textlint-rule-preset-JTF-style,textlint-ja/textlint-rule-preset-JTF-style,azu/textlint-plugin-JTF-style