added firebase deploy for examples

Author: loiane

.firebaserc

@@ -0,0 +1,5 @@
+{
+  "projects": {
+    "default": "javascript-ds-algorithms-book"
+  }
+}

.travis.yml

@@ -1,12 +1,15 @@
 language: node_js
 node_js:
   - node
+before_script:
+  - npm install -g --silent firebase-tools
 install:
   - npm install
 script:
   - npm run go
 after_success:
   - npm run coverage
+  - test $TRAVIS_BRANCH = "master" && firebase deploy --token $FIREBASE_TOKEN --non-interactive
 notifications:
   email:
     on_failure: change

firebase.json

@@ -0,0 +1,11 @@
+{
+  "hosting": {
+    "public": "examples",
+    "rewrites": [
+      {
+        "source": "**",
+        "destination": "/index.html"
+      }
+    ]
+  }
+}