Add eslint configurations (#15)

Author: LazarusX

.eslintrc

@@ -0,0 +1,39 @@
+{
+    "env": {
+        "es6": true,
+        "node": true
+    },
+    "extends": "eslint:recommended",
+    "parserOptions": {
+        "sourceType": "module",
+        "ecmaVersion": 2017
+    },
+    "rules": {
+        "indent": [
+            "error",
+            2
+        ],
+        "linebreak-style": [
+            "off",
+            "unix"
+        ],
+        "quotes": [
+            "error",
+            "single"
+        ],
+        "semi": [
+            "error",
+            "always"
+        ]
+    },
+    "overrides": [
+        {
+            "files": [
+                "app/templates/app.js"
+            ],
+            "rules": {
+                "no-console": "off"
+            }
+        }
+    ]
+}

.travis.yml

@@ -8,4 +8,5 @@ os:
 install:
 - npm install
 script:
+- npm run lint
 - npm test

app/index.js

@@ -39,7 +39,7 @@ module.exports = class extends Generator {
           if (name.startsWith('_') || name.endsWith('_')) {
             return 'Module name must not start or end with the symbol _';
           }
-          if (name.match(/[^a-zA-Z0-9\_]/)) {
+          if (name.match(/[^a-zA-Z0-9_]/)) {
             return 'Module name must contain only alphanumeric characters or the symbol _';
           }
           return true;
@@ -76,7 +76,7 @@ module.exports = class extends Generator {
     this._copyStatic('Dockerfile.windows-amd64.debug');
 
     this._copyTemplate('module.json', { repository: this.repository });
-    this._copyTemplate('package.json', { name: this.name })
+    this._copyTemplate('package.json', { name: this.name });
   }
 
   _copyStatic(from, to = undefined) {
@@ -89,4 +89,4 @@ module.exports = class extends Generator {
   _copyTemplate(file, context) {
     this.fs.copyTpl(this.templatePath(file), path.join(this.destinationPath(this.name), file), context);
   }
-}
+};