Remove JRuby-specific gem versions

Gemfile

@@ -1,6 +1,5 @@
 source "https://rubygems.org"
 
-gem "jruby-openssl" if defined? JRUBY_VERSION
 gem "rake"
 
 gem "rack-cache", "~> 1.2"
@@ -23,8 +22,6 @@ group :test do
   gem "coveralls"
   gem "simplecov",    ">= 0.9"
   gem "json",         ">= 1.8.1"
-  gem "mime-types",   "~> 1.25",  :platforms => [:jruby]
-  gem "rest-client",  "~> 1.6.0", :platforms => [:jruby]
   gem "rspec",        "~> 3.0"
   gem "rspec-its"
   gem "rubocop"
@@ -33,7 +30,7 @@ group :test do
 end
 
 group :doc do
-  gem "redcarpet"
+  gem "kramdown"
   gem "yard"
 end
 

lib/http/timeout/null.rb

@@ -48,6 +48,7 @@ def write(data)
       alias_method :<<, :write
 
       private
+
       # Retry reading
       def rescue_readable
         yield

spec/lib/http/cache_spec.rb

@@ -25,7 +25,7 @@
   subject { described_class.new(:metastore => "heap:/", :entitystore => "heap:/") }
 
   describe "#perform" do
-    it "calls request_performer blocck when cache miss" do
+    it "calls request_performer block when cache miss" do
       expect do |b|
         subject.perform(request, opts) do |*args|
           b.to_proc.call(*args)