Update license-checker, override amdefine

The amdefine module was updated to use a newish license syntax that license-checker doesn't seem to support yet. In order to prevent invalid failures I've added an override that will keep things functioning for now.

package.json

@@ -86,7 +86,7 @@
     "http-proxy": "^1.8.1",
     "husky": "^0.6.0",
     "istanbul": "^0.2.4",
-    "license-checker": "3.0.3",
+    "license-checker": "^3.1.0",
     "load-grunt-config": "^0.7.0",
     "marked": "^0.3.2",
     "marked-text-renderer": "^0.1.0",

tasks/config/licenses.js

@@ -34,7 +34,8 @@ module.exports = function (grunt) {
         'FileSaver@undefined': ['MIT'],
         'cycle@1.0.3': ['Public-Domain'],
         'pkginfo@0.2.3': ['MIT'],
-        'uglify-js@2.2.5': ['BSD']
+        'uglify-js@2.2.5': ['BSD'],
+        'amdefine@0.1.1': ['BSD-3-Clause', 'MIT']
       }
     }
   };