Fix the following issue: 3358778: Global constants should not be used, move it to a class or interface. 3358441: twilio user details should remove when drupal user will delete and load with user_load. 3358398: Replace README.txt with README.md.
Fix the following issue: 3358778: Global constants should not be used, move it to a class or interface. 3358441: twilio user details should remove when drupal user will delete and load with user_load. 3358398: Replace README.txt with README.md.