Expected usage of branch flag

[w33ble]

Looking at the existing ES branch list, I see a 1.4 branch:

However, when I try to install it, I get:

$ sudo esvm -f -b 1.4
Sep 17, 2014 5:31 PM INFO cluster Downloading & installing from "1.4" branch.

/usr/local/lib/node_modules/esvm/node_modules/progress/lib/node-progress.js:131
  complete = Array(completeLength + 1).join(this.chars.complete);

Is this a bug, or am I just doing it wrong?