Write examples for MakeTimestamp, Closes #14

[Shresth72]

No description provided.

[tisonkun]

I may expect to add the docs on struct definition.

Did you preview the result locally? I remember that docs on trait method impl don't render well.

You should be able to preview locally with:

RUSTDOCFLAGS="--cfg docsrs" cargo +nightly doc --all-features --open

[Shresth72]

The examples for the trait method impls are rendered above the trait definitions. Would this be an issue?

[tisonkun]

Good enough. Merging.

Thanks for your contribution again! And you may request review the next time when you make progress on PR. Push commit and resolve comment won't send a notification though.