add simple cli tool

Author: klaemo

Readme.md

@@ -73,9 +73,29 @@ In order for the inputEncoding option to take effect you need to install [iconv-
 Also, take a look at the iconv-lite documentation for supported encodings.
 (iconv-lite provides pure javascript character encoding conversion -> no native code compilation)
 
+## CLI
+
+To use on the command line install it globally:
+
+```bash
+$ npm install csv-streamify -g
+```
+
+This should add the `csv-streamify` command to your `$PATH`.
+
+Then, you either pipe data into it or give it a filename:
+
+```bash
+# pipe data in
+$ cat some_data.csv | csv-streamify
+# pass a filename
+$ csv-streamify some_data.csv > output.json
+# tell csv-streamify to read from + wait on stdin
+$ csv-streamify -
+```
+
 ## Wishlist
 
-- CLI
 - browser support
 
 If you would like to contribute either of those just open an issue so we can discuss it further. :)

cli.js

@@ -0,0 +1,13 @@
+#!/usr/bin/env node
+
+var csv = require('./csv-streamify')
+
+var arg = process.argv[2]
+var opts = { encoding: 'utf8' }
+
+if (!process.stdin.isTTY || arg === '-') {
+  process.stdin.pipe(csv(opts)).pipe(process.stdout)
+} else {
+  var fs = require('fs')
+  fs.createReadStream(arg).pipe(csv(opts)).pipe(process.stdout)
+}

package.json

@@ -10,6 +10,9 @@
   "scripts": {
     "test": "./node_modules/.bin/mocha -R spec"
   },
+  "bin": {
+    "csv-streamify": "cli.js"
+  },
   "repository": "https://github.com/klaemo/csv-stream",
   "keywords": [
     "csv",