feat: simple cli called p2o

.gitignore

@@ -38,4 +38,6 @@ node_modules/*
 .env.test
 
 # parcel-bundler cache (https://parceljs.org/)
-.cache
+.cache
+
+.idea

bin/p2o.js

@@ -0,0 +1,39 @@
+#!/usr/bin/env node
+const yargs = require('yargs/yargs');
+const { hideBin } = require('yargs/helpers');
+const postmanToOpenApi = require('../lib/index');
+const fs = require('fs');
+
+const args = yargs(hideBin(process.argv))
+  .usage('$0 output', 'Convert the input file, usually json, ' +
+    'with Postman collections to OpenAPI by applying the given options file, also json, ' +
+    'and save as the output file, usually yml.', (yargs) => {
+    yargs
+      .positional('output', {
+        desc: 'Save the output OpenAPI with this name',
+        type: 'string',
+      })
+      .options('i', {
+        alias: 'input',
+        demandOption: true,
+        desc: 'Path to the Postman collection json file',
+        type: 'string',
+      })
+      .options('o', {
+        alias: 'options',
+        desc: 'Path to the Options json file',
+        type: 'string',
+      })
+  }).argv;
+
+const json_str = args.options && fs.readFileSync(args.options, 'utf8');
+const options = json_str && JSON.parse(json_str);
+console.log(`Converting ${args.input} to ${args.output}, with options:\n${json_str || 'NONE'}`);
+
+postmanToOpenApi(args.input, args.output, options)
+  .then(_ => {
+    console.log(`Done !`);
+  })
+  .catch(err => {
+    console.log(err);
+  });