build(ci): Added semantic-release.

Added semantic-release to the list of dev dependencies.

Author: Alexandru Badiu

package.json

@@ -63,6 +63,7 @@
     "eslint-plugin-import": "2.2.0",
     "ghooks": "0.3.2",
     "mocha": "^3.4.2",
-    "nyc": "^11.0.2"
+    "nyc": "^11.0.2",
+    "semantic-release": "^6.3.6"
   }
 }