Merge pull request #29 from 040code/deployment

FIx #11 - Auto deployment via github pages

Author: JeroenKnoops

.travis.yml

@@ -0,0 +1,17 @@
+language: node_js
+node_js:
+- '10'
+
+before_script:
+- npm install -g gatsby-cli
+script:
+- npm run build
+deploy:
+  provider: pages
+  skip-cleanup: true
+  github-token: "$GITHUB_TOKEN"
+  local_dir: public
+  keep-history: true
+  name: "Travis Deploy"
+  on:
+    branch: master