Error if package has directory called license

[deenairn]

This is almost certainly an edge case for my workplace, but we have an internally published package where the license is in a directory called "license". This crashes the application with the following log.

I'm happy to create a PR to fix this as it's almost certainly trivial. However, what's the chances of the PR being merged?

C:\Code>node_modules\.bin\bower-license
C:\Code\node_modules\bower-json\node_modules\graceful-fs\polyfills.js:224
      throw er
      ^

Error: EISDIR: illegal operation on a directory, read
    at Object.fs.readSync (fs.js:675:18)
    at Object.fs.readSync (C:\Code\node_modules\bower-json\node_modules\graceful-fs\polyfills.js:218:23)
    at tryReadSync (fs.js:540:20)
    at Object.fs.readFileSync (fs.js:583:19)
    at module.exports (C:\Code\node_modules\package-license\index.js:25:45)
    at C:\Code\node_modules\bower-license\lib\index.js:60:41
    at C:\Code\node_modules\npm-license\lib\index.js:134:9
    at C:\Code\node_modules\read-installed\read-installed.js:142:5
    at C:\Code\node_modules\read-installed\read-installed.js:263:14
    at asyncMap (C:\Code\node_modules\slide\lib\async-map.js:27:18)