Added cli tool for calais module.

calais.js

@@ -0,0 +1,57 @@
+#!/usr/bin/env node
+
+/*!
+* calais
+* Copyright(c) 2011 Mike Cantelon
+* MIT Licensed
+*/
+
+var fs = require('fs')
+  , Calais = require('./lib/calais').Calais
+  , argv = require('optimist').argv
+  , iniparser = require('iniparser')
+
+var home = process.env.HOME
+
+// if HOME not set, die
+if (home === undefined) {
+  console.log('Error: HOME environmental variable not defined.')
+  process.exit(1)
+}
+
+iniparser.parse(home + '/.calais', function(err, data) {
+
+  var config = (err) ? false : data
+
+  // deal with command line input
+  if (argv['_'].length == 1) {
+
+    var api_key = (argv['k'] && (argv['k'] != true))
+      ? argv['k']
+      : config.api_key
+
+    if (api_key) {
+
+      console.log('K:' + api_key)
+    }
+    else {
+
+      console.log('Please specify an OpenCalais API key using the -k option.')
+    }
+
+    var contents = fs.readFileSync(argv['_'][0])
+
+    var calais = new Calais(api_key, {
+      'cleanResult': true
+    })
+    calais.set('content', content)
+    calais.fetch(function(result) {
+      console.log(result)
+    })
+  }
+  else {
+
+    console.log('Usage: calais <filename>')
+    process.exit(1)
+ }
+})