Build: Adds an editorconfig

[ebenoist]

Adds an editorconfig file to establish minimal standards for edits to any project file

[leobalter]

This should follow the discussion on #114 (comment)

[leobalter]

Also: jquery/contribute.jquery.org#129

[jzaefferer]

Though this should be fine to land as-is now, we can improve it later.

[arthurvr]

The package.json file uses 2 space indentation.

[leobalter]

The package.json is mostly updated through npm, which always rewrites it after a npm install --save or npm version.

We may follow the suggestion on the editorconfig website:

# Matches the exact files either package.json or .travis.yml
[{package.json,.travis.yml}]
indent_style = space
indent_size = 2

[ebenoist]

I went ahead and added rules for *.json and *.yml files. Let me know if I should add anything else.

[jzaefferer]

This should be specific to the affected files, [{package.json,.travis.yml}].

[ebenoist]

I can possibly see that for *.json, but shouldn't yml always be two space indented?

[jzaefferer]

You're right, that's in the spec: http://yaml.org/spec/current.html#id2519916 - apparently the amount doesn't matter, but sticking with 2 makes sense.

[scottgonzalez]

Let's not let the larger discussion hold this up. @leobalter is there anything stopping this from being merged?

[leobalter]

It LGTM.