Move babel packages to dev dependencies

Author: juffalow

package.json

@@ -12,10 +12,6 @@
   },
   "license": "MIT",
   "dependencies": {
-    "babel-cli": "^6.26.0",
-    "babel-core": "^6.26.0",
-    "babel-preset-env": "^1.6.1",
-    "babel-register": "^6.26.0",
     "commander": "^2.11.0",
     "csso": "^3.3.1",
     "htmlparser2": "^3.9.2",
@@ -41,9 +37,13 @@
     "test-ci": "./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- --require babel-register --recursive -R spec && ./node_modules/.bin/codecov"
   },
   "devDependencies": {
+    "babel-cli": "^6.26.0",
+    "babel-core": "^6.26.3",
     "babel-eslint": "^8.2.3",
     "babel-plugin-transform-runtime": "^6.23.0",
+    "babel-preset-env": "^1.7.0",
     "babel-preset-flow": "^6.23.0",
+    "babel-register": "^6.26.0",
     "chai": "^4.1.2",
     "codecov": "^3.0.0",
     "eslint": "^4.9.0",