Minor updates for modernity

Author: peterc

Gemfile

@@ -1,2 +1,2 @@
-source "http://rubygems.org"
+source "https://rubygems.org"
 gemspec

Gemfile.lock

@@ -4,17 +4,18 @@ PATH
     bitarray (0.0.5)
 
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
-    rake (0.9.2.2)
-    test-unit (2.4.5)
-    yard (0.7.4)
+    minitest (5.10.1)
+    rake (12.0.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   bitarray!
+  minitest
   rake
-  test-unit
-  yard
+
+BUNDLED WITH
+   1.13.7

Rakefile

@@ -1,5 +1,5 @@
 require "bundler/gem_tasks"
 require "rake/testtask"
 
-Rake::TestTask.new      # defaults are fine for now
-task :default => :test
+Rake::TestTask.new
+task :default => :test

bitarray.gemspec

@@ -9,17 +9,14 @@ Gem::Specification.new do |s|
   s.authors     = ["Peter Cooper"]
   s.email       = ["git@peterc.org"]
   s.homepage    = "https://github.com/peterc/bitarray"
-  s.summary     = %q{A simple, pure Ruby bit array implementation.}
-  s.description = %q{A simple, pure Ruby bit array implementation.}
-
-  s.rubyforge_project = "bitarray"
+  s.summary     = %q{A simple, pure Ruby bit-array / bitfield implementation.}
+  s.description = %q{A simple, pure Ruby bit-array / bitfield implementation.}
 
   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.require_paths = ["lib"]
-  
+
   s.add_development_dependency "rake"
-  s.add_development_dependency "yard"
-  s.add_development_dependency "test-unit"
+  s.add_development_dependency "minitest"
 end