Don't cache me bro.

build/tasks/publish-build-task.coffee

@@ -249,6 +249,7 @@ uploadAssets = (release, buildDir, assets, callback) ->
       ACL: 'public-read'
       Key: key
       Body: fs.createReadStream(assetPath)
+      CacheControl: 'max-age=0'
     s3.upload uploadParams, (error, data) ->
       if error?
         console.log("Upload release asset #{assetName} to S3 failed", error)