Add readme and username & email in npm distribution of node port.

Author: viferga

source/ports/node_port/.npmrc

@@ -1 +1,3 @@
 //registry.npmjs.org/:_authToken=${NPM_TOKEN}
+//registry.npmjs.org/:username=${NPM_USERNAME}
+//registry.npmjs.org/:email=${NPM_EMAIL}

source/ports/node_port/README.md

@@ -0,0 +1,24 @@
+<div align="center">
+  <a href="https://metacall.io" target="_blank"><img src="https://raw.githubusercontent.com/metacall/core/master/deploy/images/logo.png" alt="M E T A C A L L" style="max-width:100%; margin: 0 auto;" width="80" height="80">
+  <p><b>M E T A C A L L</b></p></a>
+  <p>A library for providing inter-language foreign function interface calls</p>
+</div>
+
+# Abstract
+
+**METACALL** is a library that allows calling functions, methods or procedures between programming languages. With **METACALL** you can transparently execute code from / to any programming language, for example, call Python code from NodeJS.
+
+`sum.py`
+``` python
+def sum(a, b):
+  return a + b
+```
+
+`main.js`
+``` javascript
+const { metacall, metacall_load_from_file } = require('metacall');
+
+metacall_load_from_file('py', [ 'sum.py' ]);
+
+metacall('sum', 3, 4); // 7
+```