⚡ I've got another confession to make

README.md

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+# GitHub emojis for Marked 2
+
+[Marked 2](http://marked2app.com/) is a great markdown previewer and it works
+really well with GitHub styles.  
+It does not display GitHub emojis though.  
+This repo contains a preprocessor to add support for emojis, so you can write
+`:octocat:` in your code and see an emoji in previewer.
+
+## Install
+
+1. Download zip file. It contains emojis from GitHub and a preprocessor file.
+1. In Marked 2 application open "Preferences" -> "Advanced" -> "Preprocessor".
+1. Check "Enable Custom Preprocessor".
+1. In "Path" field type in path to `preprocessor.sh` file inside downloaded
+folder from step 1.
+1. Done.
+
+## Build
+
+You can build and download all files yourself.
+
+1. Clone the repo.
+1. Run `build.sh` file. It will download emojis from GitHub and build
+a preprocessor file. Please note that downloading may take some time.
+1. In Marked 2 application open "Preferences" -> "Advanced" -> "Preprocessor".
+1. Check "Enable Custom Preprocessor".
+1. In "Path" field type in path to `preprocessor.sh` file inside the repo.
+1. Done.
+
+## Issues
+
+1. Preprocessor is not smart enough so it will show emojis inside code blocks
+too.
+1. Preprocessor uses `sed` command for replacement so it must be present on your
+computer.

build.sh

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+#!/bin/bash
+
+curl https://api.github.com/emojis > emojis.json && ./scripts-maker.js && bash downloader.sh

scripts-maker.js

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+#!/usr/bin/env node
+
+var fs = require('fs');
+var emojis = require('./emojis.json');
+
+var PREPROCESSOR_FILE = 'preprocessor.sh';
+var DOWNLOADER_FILE = 'downloader.sh';
+
+var preprocessorData = ['#!/bin/bash', 'sed \''];
+var downloaderData = ['#!/bin/bash', 'rm -rf emojis', 'mkdir emojis'];
+
+for (var emoji in emojis) {
+  var url = emojis[emoji];
+  var filename = getFilenameFromUrl(url);
+
+  addDataToPreprocessor(emoji, filename);
+  addDataToDownloader(url, filename);
+}
+
+preprocessorData.push('    \'');
+
+fs.writeFileSync(PREPROCESSOR_FILE, preprocessorData.join('\n'));
+fs.writeFileSync(DOWNLOADER_FILE, downloaderData.join('\n'));
+
+function escape(str) {
+  return str.replace(/\//g, '\\/');
+}
+
+function getFilenameFromUrl(url) {
+  return url.substring(url.lastIndexOf('/') + 1, url.lastIndexOf('?'));
+}
+
+function addDataToPreprocessor(emoji, filename) {
+  var src = escape(__dirname + '/emojis/' + filename);
+  var string = '     s/:' + emoji +
+      ':/<img style="height:20px;vertical-align:middle;" src="' + src + '">/;';
+  preprocessorData.push(string);
+}
+
+function addDataToDownloader(url, filename) {
+  var string = 'curl ' + url + ' > emojis/' + filename;
+  downloaderData.push(string);
+}