renamed league image files and added a placeholder image for league too
Merge branch 'master' of https://github.com/vyau987/ratingsAggreGator

# By sam reilly
# Via sam reilly
* 'master' of https://github.com/vyau987/ratingsAggreGator:
  Added 3 new migrations for the twitter integration
  Added kint package to composer.json
  Changed placeholder for the email address field of registration
  Removed "validation" js file and replaced with "register" validation for clarity. New js file contains shorter code and more comments
  Added in a "sign in with twitter" button to the login form