refactor: init cypress-cucumber-preprocessor install.

node_modules/JSONStream/test/run.js

@@ -0,0 +1,13 @@
+var readdirSync = require('fs').readdirSync
+var spawnSync = require('child_process').spawnSync
+var extname = require('path').extname
+
+var files = readdirSync(__dirname)
+files.forEach(function(file){
+  if (extname(file) !== '.js' || file === 'run.js')
+    return
+  console.log(`*** ${file} ***`)
+  var result = spawnSync(process.argv0, [file], { stdio: 'inherit', cwd: __dirname} )
+  if (result.status !== 0)
+    process.exit(result.status)
+})