Use ESHint

Remove "jshint" dev dependency from package.json and the gulp task.

sh:

``` sh
npm install gulp-eslint --save-dev
```

gulpfile.js:

``` js
var eslint = require('gulp-eslint');

gulp.task('lint', function () {
return gulp
.src(['./src/*.js', './src/cinemas/*/*.js', './tests/*.js'])
.pipe(eslint())
.pipe(eslint.format())
.pipe(eslint.failOnError());
});
```

.eslintrc:

``` json
{
"rules": {
"no-console": 0,
"no-extra-parens": 2,
"no-reserved-keys": 2,
"no-eq-null": 2,
"no-extend-native": 2,
"no-process-env": 2,
"no-self-compare": 2,
"no-void": 2,
"no-warning-comments": [1, { "terms": ["todo", "@toto"], "location": "start" }],
"vars-on-top": 2,
"wrap-iife": [2, "inside"],
"global-strict": [2, "always"],
"new-cap": 0,
"no-shadow": 0,
"no-mixed-requires": 0,
"no-new-require": 2,
"brace-style": [2, "1tbs"],
"comma-style": [2, "last"],
"func-style": [2, "expression"],
"no-inline-comments": 2,
"no-lonely-if": 2,
"no-multiple-empty-lines": 2,
"no-nested-ternary": 2,
"one-var": 2,
"operator-assignment": [2, "always"],
"padded-blocks": [2, "never"],
"quote-props": [2, "as-needed"],
"quotes": [2, "single"],
"space-after-keywords": [2, "always"],
"space-before-blocks": [2, "always"],
"space-in-brackets": [2, "never"],
"space-in-parens": [2, "never"],
"space-unary-ops": [2, { "words": true, "nonwords": false }],
"spaced-line-comment": [2, "always"],
},
"env":{
"mocha": true,
"node": true
}
}
```

Review package.json and gulpfile.js to find the current jshint dependency and lint task, then inspect the supplied .eslintrc settings. Install the specified gulp-eslint dependency, update the lint task and configuration, and run the project lint command to confirm the JavaScript sources and tests pass without jshint.

Written by the indexing model from the issue text.