docs(README): add README

Author: kubosho

Diff for: README.md

@@ -0,0 +1,29 @@
+# Vivliostyle Base
+
+Vivliostyle boilerplate repository.
+
+## Install dependencies
+
+```
+yarn install
+```
+
+## Build
+
+```
+yarn build
+```
+
+## Preview
+
+```
+yarn dev
+```
+
+## Test
+
+Run [Textlint](https://github.com/textlint/textlint).
+
+```
+yarn lint
+```