added airbnb linting for all js. Added linting to test pipeline in tr…

…avis.

.eslintrc.js

@@ -0,0 +1,15 @@
+module.exports = {
+  'env': {
+    'browser': true,
+    'es6': true,
+    'node': true,
+  },
+  'extends': 'airbnb-base',
+  'parserOptions': {
+    'sourceType': 'module',
+  },
+  'rules': {
+    // This is a cli tool. Therefore, we don't really care about console logs.
+    'no-console': 'off',
+  }
+};

.travis.yml

@@ -1,10 +1,13 @@
 git:
-  depth: 4
+  depth: 1
 language: node_js
 node_js:
   - '6'
+  - '8'
 sudo: false
 script:
+  - npm install
+  - npm test
   - npm run compile
   - npm run release
 deploy:

gulpfile.js

@@ -1,48 +1,48 @@
-var gulp = require('gulp'),
-    markdownpdf = require('gulp-markdown-pdf'),
-    zip = require('gulp-zip'),
-    changed = require('gulp-changed'),
-    fs = require('fs'),
-    pjson = require('./package.json');
+const gulp = require('gulp');
+const markdownpdf = require('gulp-markdown-pdf');
+const zip = require('gulp-zip');
+const changed = require('gulp-changed');
+const fs = require('fs');
+const pjson = require('./package.json');
 
-var config = {
-    mdPath: 'src/markdown/*.md',
-    cssPath: 'src/styles/main.css',
-    out: 'documents',
-    readme: 'README.md',
+const config = {
+  mdPath: 'src/markdown/*.md',
+  cssPath: 'src/styles/main.css',
+  out: 'documents',
+  readme: 'README.md',
 };
 
 // compile all the documents
-gulp.task('compile', function() {
-    var cwd = process.cwd();
-    return gulp.src(config.mdPath)
-        .pipe(changed(config.out, {extension: '.pdf'}))
-        .pipe(markdownpdf({
-            cwd: cwd,
-            cssPath: config.cssPath
-        }))
-        .pipe(gulp.dest(config.out));
+gulp.task('compile', () => {
+  const cwd = process.cwd();
+  return gulp.src(config.mdPath)
+    .pipe(changed(config.out, { extension: '.pdf' }))
+    .pipe(markdownpdf({
+      cwd,
+      cssPath: config.cssPath,
+    }))
+    .pipe(gulp.dest(config.out));
 });
 
 // create release zip from documents
-gulp.task('release', function() {
-    fs.stat('documents', function(err, stat) {
-        if (err) {
-            return console.log(err);
-        }
-        var release = 'microluxe20_' + pjson.version + '.zip';
-        return gulp.src(['documents/*', 'character-sheets/*', 'map/*.png', 'LICENSE'])
-            .pipe(zip(release))
-            .pipe(gulp.dest('./release'));
-    });
+gulp.task('release', () => {
+  fs.stat('documents', (err) => {
+    if (err) {
+      return console.log(err);
+    }
+    const release = `microluxe20_${pjson.version}.zip`;
+    return gulp.src(['documents/*', 'character-sheets/*', 'map/*.png', 'LICENSE'])
+      .pipe(zip(release))
+      .pipe(gulp.dest('./release'));
+  });
 });
 
-gulp.task('watch', function() {
-    gulp.watch([config.mdPath, config.cssPath], ['compile']);
+gulp.task('watch', () => {
+  gulp.watch([config.mdPath, config.cssPath], ['compile']);
 });
 
-gulp.task('default', function() {
-    console.log(fs.readFileSync(config.readme, {
-        encoding: 'UTF8'
-    }));
+gulp.task('default', () => {
+  console.log(fs.readFileSync(config.readme, {
+    encoding: 'UTF8',
+  }));
 });