Add Drop Confirmation to Rake Tasks

Your README example is flawed. Your rm is aliased to rm -i.

betelgeuse@pena ~/test $ rm -i foo.txt
rm: remove regular file foo.txt'? y
betelgeuse@pena ~/test $ touch foo.txt
betelgeuse@pena ~/test $ rm foo.txt
betelgeuse@pena ~/test $ type rm
rm is hashed (/bin/rm)</code>
</pre>
Tradionally unix utilities assume you know what you are doing.