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/console_log/index.js

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

examples/console_log/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'
 };