Stop registering bin/* as gem executables [fix #785]

Author: byroot

redis.gemspec

@@ -32,7 +32,7 @@ Gem::Specification.new do |s|
 
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
-  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+  s.executables   = `git ls-files -- exe/*`.split("\n").map{ |f| File.basename(f) }
 
   s.required_ruby_version = '>= 2.2.2'