Add libexec and template-dir to list of included files

These are needed in order for the gem to work properly. We didn't see
this locally because we don't have a convenient way to test it.

Change-Id: I4b4610d95751240a232e90d2d750926262eb5970
Reviewed-on: http://gerrit.causes.com/35637
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>

Author: Shane da Silva

overcommit.gemspec

@@ -20,7 +20,9 @@ Gem::Specification.new do |s|
 
   s.files                 = Dir['bin/**/*'] +
                             Dir['config/*.yml'] +
-                            Dir['lib/**/*.rb']
+                            Dir['lib/**/*.rb'] +
+                            Dir['libexec/**/*'] +
+                            Dir['template-dir/**/*']
 
   s.required_ruby_version = '>= 1.8.7'