Atom-beautify: add support for mjml language

[matass]

https://mjml.io/documentation/

[prettydiff]

@MatasSim This looks like XML syntax. Is there anything uniquely different about the syntax? If this is just XML syntax then it is already supported provided a slight modification to this file:

https://github.com/Glavin001/atom-beautify/blob/master/src/languages/xml.coffee

[Glavin001]

@MatasSim : If the answer to @prettydiff 's question is Yes, mjml is just the XML syntax then please let us know! We can add official support for mjml language to Atom-Beautify so you do not have to change the Atom grammar to XML whenever you want to beautify it.

[prettydiff]

I reopened the issue as the request is valid. We just need a minor technical confirmation to complete and verify support.

[matass]

Hi, I think mjml is more like HTML than XML syntax because MJML supports inline css for e-mail templating. I have changed Atom syntax from XML to HTML and beautified code, results were pretty the same. actually there is nothing unique about this syntax so I think we can close this issue.

[Glavin001]

I have changed Atom syntax from XML to HTML ... actually there is nothing unique about this syntax so I think we can close this issue.

We would want to add support for MJML such that you do not have to change the selected grammar for Atom.

It could be as simple as editing https://github.com/Glavin001/atom-beautify/blob/master/src/languages/html.coffee#L18