Add try / catch to examples. Fixes #617

[hjmsw]

Fixes #617

Checklist

• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the [Contribution Guide] and my PR follows them.
• I updated my branch with the master branch.
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation about the functionality in the appropriate .md file
• I have added in line documentation to the code I modified

Adds try / catch for all call examples in /examples

[thinkingserious]

Nice, thanks @hjmsw! This is on our backlog for implementation.

[thinkingserious]

Hello @hjmsw,

Thanks again for the PR!

We appreciate your contribution and look forward to continued collaboration. Thanks!

Team SendGrid DX