Upgrade stuff and use npm instead of yarn

Author: chadly

.babelrc

@@ -4,7 +4,7 @@
 			"@babel/env",
 			{
 				"targets": {
-					"node": "10"
+					"node": "12"
 				}
 			}
 		]

.eslintrc.js

@@ -0,0 +1,15 @@
+module.exports = {
+	env: {
+		es6: true,
+		node: true
+	},
+	globals: {
+		location: "off"
+	},
+	extends: [
+		"@runly"
+	],
+	rules:{
+		"import/no-commonjs": "off"
+	}
+};

.eslintrc.yml

@@ -2,6 +2,6 @@ lib
 
 node_modules
 npm-debug.log*
-package-lock.json
+yarn.lock
 yarn-error.log
 .module-cache

.gitignore

@@ -6,12 +6,6 @@ By default, Gatsby only makes system environment variables [prefixed with `GATSB
 
 ## Install
 
-```
-yarn add gatsby-plugin-env-variables
-```
-
-or
-
 ```
 npm install gatsby-plugin-env-variables
 ```