Added pause and resume hooks to example web project.
Added pause and resume hooks to example web project.

This commit updates the web-go example to take advantage of the
pause/resume looks added in v0.11.2.

Signed-off-by: Jacob Howard <f862f167b85d41b225785c70d70808bc7337c1fe@havoc.io>

havoc-io/mutagen,havoc-io/mutagen