Added a simple, menu-oriented, CLI tool to check for some (possible) #heartbleed affected clients.

Currently allows you to:

* check the openssl version against which your current ruby is built;
* get a list of open files that match an openssl that's different from 1.0.1g
* install/upgrade openssl through homebrew on OSX
* re-install Ruby via rbenv
[weigher.rb] Timestamp fixes, and refactoring
Added command_of_the_day script which picks a random command that has a man-page.