compatible with script
compatible with script

fixed the following issues
lib/vulcan.js: line 54, col 73, Use '!==' to compare with 'null'. (W041)
lib/vulcan.js: line 54, col 106, Use '!==' to compare with ''. (W041)
Polymer/tools,rcorp/vulcanize,bendroid/vulcanize,Polymer/tools,bendroid/vulcanize,Polymer/tools,rcorp/vulcanize,Polymer/polymer-bundler,Polymer/polymer-bundler,Polymer/tools,Polymer/polymer-bundler