Fixup windows executable duplication

[charlespwd]

Turns out that the Gemspec's executables option makes the .bat files for us.

I've tested this works properly on windows by doing the following:

1. Deleting the files and committing the delete
2. gem build theme-check.gemspec
3. gem install --bindir bin2 --local theme-check
4. dir bin2, making sure that there aren't 2 .bat.bat files and that the .bat files work properly.

Fixes #371

[macournoyer]

LGTM!

I don't understand why you tophated w/ gem install --bindir bin2 --local theme-check. Will this behave the same as when ppl install w/o args?

[charlespwd]

I wanted to see the executables. Easier to see em with the --bindir. Otherwise they get installed in the default gem's bindir which is a lot harder to get to on Windows since I'm not a cmd.exe wizard.

And yes! That's the way to install local gems instead of remote gems. You build it first and then install it from the file that the build created.

I used the --bindir flag so that it was easier to see what happened in the bin folder. Wanted to make sure no duplicate .bat.bat files were created.