Applied eslint from main .eslintrc to examples (#418)

* Changed eslintrc to be JSON file (Most projects use JSON version)
  * Added .eslintignore to ingore node_modules from subdirectories such as examples
  * Ran eslint --fix examples to fix all examples
  * Added npm script for running eslint against examples
  * Added npm script for running eslint against generated *out* code
  * Hooked npm scripts into travis ci to prevent examples from becoming inconsistent with future PR's

examples/import_js/defined-in-js.js

@@ -1,21 +1,21 @@
 export function name() {
-  return 'World';
+    return 'World';
 }
 
 export class MyClass {
-  constructor() {
-    this._number = 42;
-  }
+    constructor() {
+        this._number = 42;
+    }
 
-  get number() {
-    return this._number;
-  }
+    get number() {
+        return this._number;
+    }
 
-  set number(n) {
-    return this._number = n;
-  }
+    set number(n) {
+        return this._number = n;
+    }
 
-  render() {
-    return `My number is: ${this.number}`;
-  }
+    render() {
+        return `My number is: ${this.number}`;
+    }
 }

examples/import_js/index.js

@@ -1,5 +1,5 @@
 // For more comments about what's going on here, check out the `hello_world`
 // example
-const rust = import("./import_js");
+const rust = import('./import_js');
 
 rust.then(m => m.run());

examples/import_js/webpack.config.js

@@ -1,10 +1,10 @@
 const path = require('path');
 
 module.exports = {
-  entry: "./index.js",
-  output: {
-    path: path.resolve(__dirname, "dist"),
-    filename: "index.js",
-  },
-  mode: "development"
+    entry: './index.js',
+    output: {
+        path: path.resolve(__dirname, 'dist'),
+        filename: 'index.js',
+    },
+    mode: 'development'
 };