refactor(Cypress): add nodemodules

node_modules/gherkin/CONTRIBUTING.md

@@ -0,0 +1,20 @@
+Please read [CONTRIBUTING](https://github.com/cucumber/gherkin/blob/master/CONTRIBUTING.md) first.
+You should clone the [cucumber/gherkin](https://github.com/cucumber/gherkin) repo if you want
+to contribute.
+
+## Run tests
+
+### Using make
+
+Just run `make` from this directory.
+
+### Using npm
+
+Just run `npm test` from this directory (you need to `npm install` first).
+
+Keep in mind that this will only run unit tests. The acceptance tests are only
+run when you build with `make`.
+
+## Browser Build
+
+    make dist/gherkin.js