Please don't do that.

1. This gem is signed with my private key when I build it.  If you're going to go through the trouble of trying to install it locally, generate a set of signing keys.  See this: http://docs.rubygems.org/read/chapter/21
2. For better or worse, I use jeweler to develop the gem.  The gemspec is generated by running `rake gemspec`.  Any changes made to the gemspec get overwritten.