Merge pull request heroku#8 from bf4/add_license_to_gemspec

Add license to gemspec, is MIT

Author: schneems

rails_stdout_logging.gemspec

@@ -7,6 +7,7 @@ Gem::Specification.new do |gem|
   gem.description   = %q{Sets Rails to log to stdout}
   gem.summary       = %q{Overrides Rails' built in logger to send all logs to stdout}
   gem.homepage      = "https://github.com/heroku/rails_stdout_logging"
+  gem.license       = 'MIT'
 
   gem.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   gem.files         = `git ls-files`.split("\n")