Using `fs.watch` for Windows compatibility.

Now watches whole directories, not specific files. Allows removal of lots of code from utils/fs.

lib/codex/cli/index.js

@@ -234,16 +234,16 @@ cli.on('watch', function (args) {
    logObject('error', d.data);
  });

  var files = _.files(opts.dataDir);
  files = files.concat(_.files(opts.templateDir));

  _.watch(files, function (file) {
  function rebuild() {
    project.flush();
    project.build(function () {
      log.info('Project rebuilt successfully');
      log.info('Watching...');
    });
  });
  }

  fs.watch(opts.dataDir, rebuild);
  fs.watch(opts.templateDir, rebuild);
});

function padAfter (str, len) {

lib/codex/utils/fs.js

@@ -42,38 +42,3 @@ exports.mkdir = function (_path, mode, callback) {
    callback(null);
  });
};

var ignore = [ 'node_modules', '.git' ];
function ignored (file) {
  return !~ignore.indexOf(file);
}

var extension = [ '.js' ,'.jade', '.md', '.styl', '.json' ];
function ext (file) {
  var ex = path.extname(file);
  return ~extension.indexOf(ex);
}

exports.files = function (dir, arr) {
  arr = arr || [];
  fs.readdirSync(dir)
    .filter(ignored)
    .forEach(function (p) {
      p = path.join(dir, p);
      if (fs.statSync(p).isDirectory()){
        exports.files(p, arr);
      } else if (ext(p)) {
        arr.push(p);
      }
    });
  return arr;
};

exports.watch = function (files, fn) {
  var options = { intervale: 100 };
  files.forEach(function (file) {
    fs.watchFile(file, options, function (c, p) {
      if (p.mtime < c.mtime) fn(file);
    });
  });
};