refactor: init cypress-cucumber-preprocessor install.

node_modules/assertion-error-formatter/README.md

@@ -0,0 +1,22 @@
+# Node Assertion Error Formatter
+
+Format errors to display a diff between the actual and expected
+
+Originally extracted from [mocha](https://github.com/mochajs/mocha)
+
+## Usage
+```js
+import {format} from 'assertion-error-formatter'
+
+format(error)
+```
+
+## API Reference
+
+#### `format(error [, options])`
+
+* `error`: a javascript error
+* `options`: An object with the following keys:
+  * `colorFns`: An object with the keys 'diffAdded', 'diffRemoved', 'errorMessage', 'errorStack'. The values are functions to colorize a string, each defaults to identity.
+  * `inlineDiff`: boolean (default: false)
+    * toggle between inline and unified diffs