Add jsx to parserOption.ecmaFeatures

[TimNN]

Hi, I'm pretty new to using eslint so I'm still trying to find my way around.

I've been using this and eslint-config-canonical with the following .eslintrc.yml:

---
  extends:
    - "eslint-config-canonical"
    - "eslint-config-canonical-react"

Which produced the following error:

  14:5  error  Parsing error: Unexpected token <

which was caused by an opening jsx tag.

I fixed this problem by adding

  parserOptions:
    ecmaFeatures:
      jsx: true

to my .eslintrc (note the parserOptions) as mentioned in the eslint documentation.

I don't know if there is a reason that this is not included in this config, but if there is none, I believe that is should be added to this config.