Made compatible with 1.8.x by requiring rubygems
The `:pattern` option got removed at some point.

Adds back the `options[:pattern]` setting so that the pattern can be
changed for processes that contain 'Rails: ' or 'Rack: '.
Merge pull request #3 from bryantraywick/add-pattern-option-back-to-script

The `:pattern` option got removed at some point.
Update and rename README.rdoc to README.md
Swap '/' characters with '\/' so that the default pattern works in the regex.
Try to send TERM to stale passenger processes before sending KILL to kill them for good.