Fast cached jshint for gulp

It uses in-memory stat cache, that's why lint-watch is blazing fast.

Usage:

var jshint = require('gulp-jshint-cache');
var sources = './**/*.js';

gulp.task('lint', jshint({ src: sources }));

gulp.task('lint-or-die', jshint({ src: sources, dieOnError: true }));

gulp.task('lint-watch', ['lint'], function(neverCalled) {
  gulp.watch(serverSources, ['lint']);
});

Options:

• src -- sources for glob.src (required)
• dieOnError -- if true, the process will die with error status 1 if lint fails. Use this for git pre-commit check.
• jshint -- options for gulp-jshint