Allow unversioned builds in release zip
Allow unversioned builds in release zip

Fix for OS X's dumb inplace sed that left "-e" files in the release >:(

Polymer/tools,jorgecasar/tools,imrehorvath/tools,jorgecasar/tools,Polymer/tools,addyosmani/tools,Polymer/tools,Polymer/tools,addyosmani/tools,imrehorvath/tools