sendgrid/smtpapi-python — pull request #3 by zacwitte (2014-03-04 23:10:06+00:00)
Title: Fixed README for substitutions

README.md incorrectly states method signature as

header.set_substitutions('key', ['value1', 'value2'])

Should be:

header.set_substitutions({'key': ['value1', 'value2']})