eventController.createEvent method

[AmrAymanKhalil505]

• white box test.
• Severity(High)
• Reported by Amr Ayman Elsayed
• Description :
  you can add an event without being a service provider in the database as you don't need to log in
  using post man
  you also can add events with a service provider name that doesn't exist using post man
• Steps to reproduce the issue:
  post using post man
  localhost:3000/event
  {
  "sp_name":"service provider that doesn't exict",
  "title":"anything",
  "date":"1-5-2017",
  "description":"anything"
  }
• expected results:
  any notification that this business doesn't exist and not to add this in the events also asking me to log in