Include 2017 presets

Author: alexcanessa

.babelrc

@@ -1,5 +1,5 @@
 {
-    "presets": ["es2015"],
+    "presets": ["es2015", "es2017"],
     "plugins": ["transform-runtime"],
     "env": {
         "test": {

package-lock.json

@@ -53,12 +53,13 @@
         "require-yaml": "0.0.1"
     },
     "devDependencies": {
-        "babel-cli": "^6.24.1",
+        "babel-cli": "^6.26.0",
         "babel-eslint": "^8.0.0",
         "babel-plugin-istanbul": "^4.1.5",
         "babel-plugin-transform-runtime": "^6.23.0",
         "babel-preset-env": "^1.4.0",
         "babel-preset-es2015": "^6.24.1",
+        "babel-preset-es2017": "^6.24.1",
         "babel-register": "^6.24.1",
         "chai": "^4.1.2",
         "eslint-config-semistandard": "^11.0.0",