Enable linking to specific lines in source files

Earlier, I made it so that `#methods`, `#method_methodName`, etc, all can be used on page load to link to specific methods, properties, etc.  But I forgot that `#l38` can point to specific line numbers in files.  Enabling that could be handy in some cases.

Otherwise, I also added a very simple test project for testing against.  I don't have a project sitting around with YUIDocs to generate docs for, so this should make it easier to do some basic sanity checks.