Add support for async functions in arrow-parens

[hzoo]

Fixes #8

Depends on a fix in babel-eslint I will make, which is to keep node.async

Ref babel/babel-eslint#166

https://github.com/babel/babel-eslint/blob/f5d9f37a36978adaa660d0515cd58bff56380181/acorn-to-esprima.js#L242-L245

@leebyron

[hzoo]

added this line like I mentioned in #8 (comment)

[hzoo]

@leebyron Ok should be fixed. Also tested in express-graphql https://github.com/graphql/express-graphql/blob/34c14410b2879355e192462bdd159df884c28537/.eslintrc#L38

With eslint@1.1.0, babel-eslint@4.0.7, eslint-plugin-babel@2.1.0
(which I will publish now)

[hzoo]

@jquense Oh can you add me to the npm users or publish 2.1.0?

[jquense]

@hzoo I can publish tho a far amount of tests are failing...are these false positives?

sorry forgot to npm install first. publishing now

[hzoo]

Um it it looks like it passes to me? https://travis-ci.org/babel/eslint-plugin-babel

[hzoo]

K thanks - we should add a travis badge to the readme

[jquense]

good call :) and I will add you to the npm users as well, as soon as I get a free moment

[spalger]

I'm seeing this again, is it just me?

Using babel-eslint 6.0.4 with eslint 2.10.1