Remove credentials from scripts

[iamareebjamal]

Travis CI scripts contain surge credentials which anyone can use to deploy the site. This should never have been commited and should be changed to environment variables in CI

[YashKumarVerma]

If they are changed to environment variables, the pull requests won't get it working because the contributers won't have the credentials in their travis.

Possible solution is to encrypt them using travis Ruby gem

[iamareebjamal]

No one can change the environment variables except admins and maintainers. Encrypting using Travis gem is also using secrets as environment variables which are used to decrypt the file. Secondly, encrypting is used for files which can't be used as environment variables.

[abishekvashok]

If they are changed to environment variables, the pull requests won't get it working