Membership registration & payment API (#4)

* remove newrelic from use in devenv

* add endpoint for membership payments

* fix some wierd spaces

* minor code styling and logging stuff

* replace non-breaking spaces with normal ones

* remove duplicate function

* minor code styling

* add functionality for writing new member to google sheets

* add config example

* update example config, start using config in google credentials

* remove var creds from google sheets auth

* rename config.example to config.template and fix readme

* add async and google-spreadsheet packages

* rename workingWithRows to addRow

* return missing header from readme

* minor code styling

* flatten google config structure, add address fields

* add request validation to membership endpoint

* fix config field names

* more error handling, fix indentation

package.json

@@ -19,14 +19,19 @@
   "homepage": "https://github.com/koodiklinikka/koodiklinikka.fi-api",
   "dependencies": {
     "apicache": "0.0.12",
+    "async": "^2.5.0",
     "bluebird": "^2.9.3",
     "body-parser": "^1.10.1",
     "cors": "^2.7.1",
     "express": "^4.11.0",
+    "google-spreadsheet": "^2.0.4",
+    "joi": "^10.6.0",
     "lodash": "^3.10.1",
+    "moment": "^2.18.1",
     "morgan": "^1.5.1",
     "newrelic": "^1.18.0",
     "node-twitter": "0.5.2",
+    "stripe": "^4.23.1",
     "superagent": "^0.21.0",
     "validator": "^3.27.0"
   }