modify sendgrid code

This is in response to our conversation on Twitter.

<blockquote class="twitter-tweet" lang="en"><p><a href="https://twitter.com/SendGrid">@SendGrid</a> hardcoding to get it to work : <a href="https://t.co/zxWp4yqdtR">https://t.co/zxWp4yqdtR</a> - discrepancy between sendgrid-&gt;send or sendgrid-&gt;smtp-&gt;send in docs</p>&mdash; Stacey Mulcahy (@bitchwhocodes) <a href="https://twitter.com/bitchwhocodes/statuses/500433782181474304">August 16, 2014</a></blockquote>

In February 2014, SMTP support was removed from official SendGrid libraries,
https://github.com/sendgrid/sendgrid-php/commit/0e80bece760746a1ee9caa5db5a7d790f678dc14

This updates the library to send with web, thus fixing your issue.

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We've attempted to update the Azure docs once or twice, however we have been unable to due to corporate processes. Do you have any idea how we could update those?