Update GCC to 4.8 in Travis build environment

.travis.yml

@@ -19,15 +19,25 @@
 # IN THE SOFTWARE.
 
 language: node_js
+sudo: false
 
 # Node.js versions
 node_js:
   - 4.5.0
   - 6.7.0
 
+# Update GCC to 4.8 to build Gemini
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - gcc-4.8
+      - g++-4.8
+
 # Install dependencies
 before_script:
   - npm install
 
 # Perform build and tests
-script: npm run build
+script: npm run build

package.json

@@ -51,6 +51,7 @@
     "del": "^2.2.0",
     "eslint": "^3.6.1",
     "eslint-plugin-mocha": "^4.6.0",
+    "gemini": "^4.11.3",
     "git-hooks": "^1.1.6",
     "gulp": "^3.9.1",
     "gulp-changed": "^1.3.2",