Update description && remove tests from gem.files

changit.gemspec

@@ -4,11 +4,14 @@ require File.expand_path('../lib/changit/version', __FILE__)
 Gem::Specification.new do |gem|  
   gem.authors       = ["aaooki"]
   gem.email         = ["[email protected]"]
-  gem.description   = %q{Change git config for multiple projects at once.}
-  gem.summary       = %q{Change git config for multiple projects at once.}
+  gem.description   = %q{An over-engineered tool to change git config for multiple projects at once.}
+  gem.summary       = %q{An over-engineered tool to change git config for multiple projects at once.}
   gem.homepage      = "http://aaooki.github.io"
 
-  gem.files         = `git ls-files`.split($\)
+  gem.files         = `git ls-files`.split($\).reject do |f|
+    f.match(%r{^(test|spec|features)/})
+  end
+
   gem.executables   = ["changit"]
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.name          = "changit"