Ensure that the expires_in field is handled as a number. Fixes #22.
Ensure that the expires_in field is handled as a number. Fixes #22.

gsuitedevs/apps-script-oauth2,googlesamples/apps-script-oauth2,googleworkspace/apps-script-oauth2,ohio813/apps-script-oauth2,Spencer-Easton/apps-script-oauth2,AdamRLukaitis/apps-script-oauth2