Update gemspec files

Author: byroot

json-java.gemspec

@@ -14,7 +14,7 @@ spec = Gem::Specification.new do |s|
 
   s.platform = 'java'
 
-  s.files = Dir["lib/**/*", "LICENSE"]
+  s.files = Dir["lib/**/*", "COPYING"]
 
   s.homepage = "https://ruby.github.io/json"
   s.metadata = {

json.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.rdoc_options = ["--title", "JSON implementation for Ruby", "--main", "README.md"]
   s.files = [
     "CHANGES.md",
-    "LICENSE",
+    "COPYING",
     "README.md",
     "ext/json/ext/fbuffer/fbuffer.h",
     "ext/json/ext/generator/depend",

json_pure.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.rdoc_options = ["--title".freeze, "JSON implementation for ruby".freeze, "--main".freeze, "README.md".freeze]
   s.files = [
     "CHANGES.md".freeze,
-    "LICENSE".freeze,
+    "COPYING".freeze,
     "README.md".freeze,
     "json_pure.gemspec".freeze,
     "lib/json.rb".freeze,