rake hoptoad:deploy API_KEY=....

[Paul Paradise]

After submitting a lighthouse ticket[1] requesting support for marking
a different project as deployed using a single hoptoad_notifier
installation, I went ahead and implemented it. Most people won't have
much use for the feature, but those making heavy use of Hoptoad and
splitting their errors into multiple projects (for example, a separate
project for client-side javascript errors) will appreciate the change.
The change is pretty simple and includes tests; feel free to pull from
my github repository[2].

[1]
http://help.hoptoadapp.com/discussions/hoptoad-notifier-patches-and-discussion/38-rake-hoptoaddeploy-should-allow-specifying-api_key-from-the-command-line
[2] http://github.com/natacado/hoptoad_notifier

Thanks,
Paul