Updated to JSHint 2.7.0 with experimental async/await support

jshint/LICENSE

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+Copyright 2012 Anton Kovalyov (http://jshint.com)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

jshint/README.md

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+# JSHint, A Static Code Analysis Tool for JavaScript
+
+\[ [Use it online](http://jshint.com/) • [About](http://jshint.com/about/) •
+[Docs](http://jshint.com/docs/) • [FAQ](http://jshint.com/docs/faq) •
+[Install](http://jshint.com/install/) • [Hack](http://jshint.com/hack/) •
+[Blog](http://jshint.com/blog/) • [Twitter](https://twitter.com/jshint/) \]
+
+[![NPM version](https://img.shields.io/npm/v/jshint.svg?style=flat)](https://www.npmjs.com/package/jshint)
+[![Linux Build Status](https://img.shields.io/travis/jshint/jshint/master.svg?style=flat&label=Linux%20build)](https://travis-ci.org/jshint/jshint)
+[![Windows Build status](https://img.shields.io/appveyor/ci/jshint/jshint/master.svg?style=flat&label=Windows%20build)](https://ci.appveyor.com/project/jshint/jshint/branch/master)
+[![Dependency Status](https://img.shields.io/david/jshint/jshint.svg?style=flat)](https://david-dm.org/jshint/jshint)
+[![devDependency Status](https://img.shields.io/david/dev/jshint/jshint.svg?style=flat)](https://david-dm.org/jshint/jshint#info=devDependencies)
+[![Coverage Status](https://img.shields.io/coveralls/jshint/jshint.svg?style=flat)](https://coveralls.io/r/jshint/jshint?branch=master)
+
+JSHint is a community-driven tool to detect errors and potential problems
+in JavaScript code. It is very flexible so you can easily adjust it to your
+particular coding guidelines and the environment you expect your code to
+execute in.
+
+## Reporting a bug
+
+To report a bug simply create a
+[new GitHub Issue](https://github.com/jshint/jshint/issues/new) and describe
+your problem or suggestion. We welcome all kinds of feedback regarding
+JSHint including but not limited to:
+
+ * When JSHint doesn't work as expected
+ * When JSHint complains about valid JavaScript code that works in all browsers
+ * When you simply want a new option or feature
+
+Before reporting a bug look around to see if there are any open or closed tickets
+that cover your issue. And remember the wisdom: pull request > bug report > tweet.
+
+## Issue Priority
+
+- *P1:* Something is throwing exceptions; broken JSHint backward compatibility.
+- *P2:* Something is not being parsed correctly.
+- *P3:* Features that the core team will work on once P2s and P1s are done.
+- *P4:* Patches welcome; The request is good, but low priority.
+
+
+## License
+
+JSHint is distributed under the MIT License. One file and one file only
+(src/stable/jshint.js) is distributed under the slightly modified MIT License.
+
+## The JSHint Team
+
+JSHint is maintained by [Rick Waldron](https://github.com/rwaldron/), [Caitlin
+Potter](https://github.com/caitp/), [Mike
+Sherov](https://github.com/mikesherov/), and [Mike
+Pennisi](https://github.com/jugglinmike/).
+
+## Thank you!
+
+We really appreciate all kinds of feedback and contributions. Thanks for using and supporting JSHint!
+
+# ECMAScript 6, 7 and next
+
+The following features are supported:
+
+  * async/await: backported from [Seb Vincent](https://github.com/sebv/jshint/tree/esnextnext) esnextnext branch and merged into jshint master
+