Adding a version command to get the version of penelope installed.

bin/penelope

@@ -16,6 +16,9 @@ argv = yargs
   .default('help', false)
   .describe('help', 'Display this help text.')
   .alias('help', 'h')
+  .describe('version', 'Print the version number')
+  .alias('version', 'v')
+  .default('version', false)
   .alias('command', 'c')
   .describe('command', 'A command to run as a child.')
   .describe('name', 'If present, a name for the command in the same position. The first --name will name the first --command.')
@@ -28,6 +31,11 @@ if (argv.help) {
   process.exit(0);
 }
 
+if (argv.version) {
+  console.log(require('../package').version);
+  process.exit(0);
+}
+
 var commands = argv.command;
 if (typeof argv.command === 'string') {
   commands = [ argv.command ];

package.json

@@ -1,6 +1,6 @@
 {
   "name": "lepew-penelope",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "A simple task wrapper that produces json event streams from the wrapped sub-processes.",
   "main": "index.js",
   "bin": {

test/testCommandLine.js

@@ -11,7 +11,7 @@ var penelopeBinPath = path.join(__dirname, '..', 'bin', 'penelope');
 
 describe('penelope executable', function() {
   it('should display helptext', function(done) {
-    var stream = run(path.join(__dirname, '..', 'bin', 'penelope'), ['-h']);
+    var stream = run(penelopeBinPath, ['-h']);
     var output = '';
     stream.stderr.pipe(es.through(
       function(data) {
@@ -24,6 +24,16 @@ describe('penelope executable', function() {
     ))
     .pipe(process.stdout);
   });
+  it ('should print its own version number', function(done) {
+    var stream = run(penelopeBinPath, ['-v']);
+    stream
+      .pipe(es.split())
+      .pipe(es.writeArray(function(error, array) {
+        should.exist(array[0]);
+        array[0].should.equal(require('../package').version);
+        done(error);
+      }));
+  });
   it('should run a signle command', function(done) {
     var args = [
       '-c', beeperPath