customCommand not working due to invalid Native code

[rogeriochaves]

Hello!

I've tried to use customCommand, but it doesn't work, I noticed that an elm list end up being passed to the called function, i'm getting an error like this:

number or type of arguments don't agree with keys protocol command, value: {"ctor":"::","_0":"Escape","_1":{"ctor":"[]"}}

the problem is in this line: https://github.com/lorenzo/elm-webdriver/blob/master/src/Native/Webdriver.js#L395
we should convert it to a javascript array and use apply instead of call to execute the functions

[lorenzo]

Hmm, interesting. I've used customCommad a few times without an error. Would you like to make the change yourself and send a pull request?