configure eslint

[sungwoncho]

mantra-cli project (not the projects created by it) lacks a good eslint setup. Having one will be handy for development.

[StorytellerCZ]

Just to clarify, are you referring to mantra-cli or projects created by it?

[sungwoncho]

@StorytellerCZ Sorry for the confusion. Edited the issue.

[StorytellerCZ]

AirBnB seems to be the preferred style, I think that might be a good starting point, but that might be quiet contentious debate. Personally I think we should add some very specific rules to begin with might be the good idea (like spacing, camel case, max line length).

[sungwoncho]

I would prefer simply enforcing airbnb config and leaving no room for style debate in the future.

[macrozone]

I think it woud be best if we have a config that can be used while creating new apps. This config could be share amongst your co-workers. The config could also contain what will be added to your project-specific mantra_cli.yaml.