[grunt] remove unneeded render_readme task

tasks/render_readme.js

@@ -1,84 +0,0 @@
-module.exports = function (grunt) {
-  var expect = require('expect.js');
-  var root = require('path').join.bind(null, __dirname, '../');
-
-  var README = root('README.md');
-  var RE_COMMENT = /<!--(.+?)-->/g;
-
-  var tags = {
-    render: function (args) {
-      return grunt.config.process(args.template);
-    },
-    include: function (args) {
-      return grunt.file.read(args.path);
-    }
-  };
-
-  grunt.registerTask('render_readme', function () {
-    var input = grunt.file.read(README);
-    var chunks = [];
-
-    var comments = findAndParseComments(input);
-
-
-    for (var i = 0; i < comments.length; i += 2) {
-      var open = comments[i];
-      var close = comments[i + 1];
-
-      expect(close.tag).to.be('/' + open.tag);
-
-      if (!tags[open.tag]) {
-        throw new TypeError('unkown tag name ' + open.tag);
-      }
-
-      chunks.push(input.substring(open.i0, open.i1));
-      chunks.push('\n' + tags[open.tag](open.args).trim() + '\n');
-      chunks.push(input.substring(close.i0, close.i1));
-
-      // add the text between this and the next tag
-      if (comments.length > i + 2) {
-        var next = comments[i + 2];
-        chunks.push(input.substring(close.i1, next.i0));
-      }
-    }
-
-    var output = chunks.join('');
-    if (output === input) {
-      grunt.log.ok('no update to the readme');
-      return;
-    }
-
-    grunt.log.ok('readme updated and added to git');
-    grunt.file.write(README, output);
-    grunt.util.spawn({
-      cmd: 'git',
-      args: ['add', README]
-    }, this.async());
-  });
-
-  function findAndParseComments(input) {
-    var comments = [];
-    var match;
-    var comment;
-
-    while (match = RE_COMMENT.exec(input)) {
-      var parts = match[1].trim().split(/\s+/);
-      comment = {
-        tag: parts.shift().trim(),
-        args: parts.join(' ').trim(),
-        i0: match.index,
-        i1: match.index + match[0].length
-      };
-
-      if (comment.args) {
-        comment.args = JSON.parse(comment.args);
-      } else {
-        comment.args = null;
-      }
-
-      comments.push(comment);
-    }
-
-    return comments;
-  }
-};