Add license plugin for grunt (#359)

Gruntfile.js

@@ -183,11 +183,22 @@ module.exports = function(grunt) {
                     src: ['**/header.php', '**/login.php']
                 }
             }
+        },
+        license: {
+            all: {
+                // Target-specific file lists and/or options go here. 
+                options: {
+                    // Target-specific options go here. 
+                    directory: 'bower_components',
+                    output: 'license/LICENSES'
+                }
+            }
         }
     });
 
     require('load-grunt-tasks')(grunt);
     grunt.loadNpmTasks('grunt-mocha-webdriver');
+    grunt.loadNpmTasks('grunt-license-bower');
 
     grunt.registerTask('default', ['wiredep', 'bower_concat', 'bowercopy', 'concat', 'uglify', 'cssmin', 'tags', 'cachebreaker']);
 

package.json

@@ -33,6 +33,7 @@
     "load-grunt-tasks": "^3.4.0",
     "mocha": "^2.2.1",
     "phantomjs": "~1.9.2",
-    "wd": "^0.3.3"
+    "wd": "^0.3.3",
+    "grunt-license-bower": "~1.0.1"
   }
 }