Spanish keyboard mappings

[frarees]

Fixes #135.

[imacnu]

it´s merge in ext install package version?

[frarees]

@imacnu no. You can checkout my es_maps branch or download the patch and apply it yourself. To test extensions I package them using vsce package (here) to generate a .vsix file to later load it via code file.vsix (here).

[jpoon]

@frarees, can you fix conflicts? I can merge afterwards.

[frarees]

Travis failed the first time. Actually I feel there's something wrong in the build pipepile as sometimes I manage to get some unexpected can't open file errors while tests run. And has nothing to do with this branch, as I managed to get similar issues on master. I'll take a further look to see if I find something about this issue.

EDIT see #175