feat: upgrade dependencies, remove local plugin (#148)

- Moves all dependencies to the latest stable release
- Switches over to @nikhilag’s Shopify plugin (see angeloashmore/gatsby-source-shopify#10 for reasoning)

closes #107

gatsby-config.js

@@ -2,14 +2,14 @@ module.exports = {
   siteMetadata: {
     siteUrl: 'https://store.gatsbyjs.org',
     title: 'Gatsby Store',
-    description: 'Get Gatsby Swag!',
+    description: 'Get Gatsby Swag!'
   },
   plugins: [
     'gatsby-transformer-sharp',
     {
-      resolve: 'gatsby-source-shopify-storefront',
+      resolve: 'gatsby-source-shopify2',
       options: {
-        siteName: 'gatsby-swag',
+        shopName: 'gatsby-swag',
         accessToken: '9aa73c089d34741f36edbe4d7314373a'
       }
     },

package.json

@@ -8,21 +8,21 @@
     "axios": "^0.18.0",
     "emotion": "^9.1.3",
     "emotion-server": "^9.1.3",
-    "gatsby": "^2.0.0-rc.19",
-    "gatsby-image": "^2.0.0-rc.1",
-    "gatsby-plugin-emotion": "^2.0.0-rc.5",
-    "gatsby-plugin-react-helmet": "^3.0.0-rc.1",
-    "gatsby-plugin-sharp": "^2.0.0-rc.7",
-    "gatsby-source-filesystem": "^2.0.1-rc.6",
-    "gatsby-transformer-sharp": "^2.1.1-rc.3",
+    "gatsby": "^2.0.18",
+    "gatsby-image": "^2.0.13",
+    "gatsby-plugin-emotion": "^2.0.5",
+    "gatsby-plugin-react-helmet": "^3.0.0",
+    "gatsby-plugin-sharp": "^2.0.6",
+    "gatsby-source-shopify2": "^2.0.6",
+    "gatsby-transformer-sharp": "^2.1.3",
     "react": "^16.4.2",
     "react-dom": "^16.4.2",
     "react-emotion": "^9.1.3",
     "react-helmet": "^5.2.0",
     "react-icons": "^3.1.0",
     "react-onclickoutside": "^6.7.1",
     "react-router-dom": "^4.3.1",
-    "recompose": "^0.27.1",
+    "recompose": "^0.30.0",
     "shopify-buy": "^1.4.0"
   },
   "keywords": [
@@ -35,8 +35,7 @@
     "develop": "gatsby develop",
     "format": "prettier --write 'src/**/*.js'",
     "lint": "echo \"Error: no linter specified\" && exit 0",
-    "test": "echo \"Error: no test specified\" && exit 0",
-    "postinstall": "cd plugins/gatsby-source-shopify-storefront/ && yarn"
+    "test": "echo \"Error: no test specified\" && exit 0"
   },
   "devDependencies": {
     "prettier": "^1.12.0"