move babel to dev dependencies, update releasing docs to reflect scripts in package.json

package.json

@@ -4,7 +4,6 @@
   "private": false,
   "description": "The Open Source Routing Machine is a high performance routing engine written in C++14 designed to run on OpenStreetMap data.",
   "dependencies": {
-    "babel-plugin-transform-class-properties": "^6.24.1",
     "nan": "^2.6.2",
     "node-cmake": "^2.3.2",
     "node-pre-gyp": "^0.6.36"
@@ -38,6 +37,7 @@
   },
   "devDependencies": {
     "aws-sdk": "~2.0.31",
+    "babel-plugin-transform-class-properties": "^6.24.1",
     "chalk": "^1.1.3",
     "cucumber": "^1.2.1",
     "d3-queue": "^2.0.3",