Added publish.nightly task to gulp file.

gulpfile.js

@@ -843,6 +843,50 @@ gulp.task('publish.npm', function(done) {
   });
 });
 
+
+/**
+ * Publishes a new tag to npm with a nightly tag.
+ */
+gulp.task('publish.nightly', function(done) {
+  var fs = require('fs');
+  var spawn = require('child_process').spawn;
+  var packageJSON = require('./package.json');
+  var hashLength = 8;
+
+  // Generate a unique hash based on current timestamp
+  function createUniqueHash() {
+    var makeHash = require('crypto').createHash('sha1');
+    var timeString = (new Date).getTime().toString();
+    return makeHash.update(timeString).digest('hex').substring(0, hashLength);
+  }
+
+  /**
+   * Split the version on dash so that we can add nightly
+   * to all production, beta, and nightly releases
+   * 0.1.0                  -becomes-  0.1.0-r8e7684t
+   * 0.1.0-beta.0           -becomes-  0.1.0-beta.0-r8e7684t
+   * 0.1.0-beta.0-t5678e3v  -becomes-  0.1.0-beta.0-r8e7684t
+   */
+  packageJSON.version = packageJSON.version.split('-')
+    .slice(0, 2)
+    .concat(createUniqueHash())
+    .join('-');
+
+  var npmCmd = spawn('npm', ['publish', '--tag=nightly', './dist']);
+
+  npmCmd.stdout.on('data', function (data) {
+    console.log(data.toString());
+  });
+
+  npmCmd.stderr.on('data', function (data) {
+    console.log('npm err: ' + data.toString());
+  });
+
+  npmCmd.on('close', function() {
+    done();
+  });
+});
+
 /**
  * Build Ionic sources, with typechecking, .d.ts definition generation and debug
  * statements removed.