Added LinCastor

*IMPORTANT*: I **know** that the URL looks sketchy on this one, but honestly, that's the developer's own link (open the `homepage` and check it out for yourself). Honestly, the entire app and developer looks kind of sketchy (hosting a Wordpress site and hosting files from Dropbox), but it looks safe enough, considering that it's been reviewed by MacUpdate and CNET.

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LinCastor enables you to register your own custom URL protocol scheme
(e.g. mylink://foo/bar) and associate it with an application, shell or
AppleScript handler.

As most OS X application support embedding links as part of a text, a
custom URL protocol scheme provides a great way to connect different
applications together or trigger custom workflows. For example: a link
jira://issue1234 could open a JIRA tracker with specific issue. This
link could then be placed in iCal’s reminder or any other text fields
supporting links.