fix license name in package.json. fixes #150

Author: nightwing

package.json

@@ -12,7 +12,7 @@
         "url": "https://github.com/ajaxorg/ace-builds.git"
     },
     "author": "",
-    "license": "BSD",
+    "license": "BSD-3-Clause",
     "bugs": {
         "url": "https://github.com/ajaxorg/ace-builds/issues"
     },