Move the gem's C extension into lib/yarp/

and change the require from "yarp.so" to "yarp/yarp", which is more
aligned with existing community conventions for gems.

Author: flavorjones

.gitignore

@@ -12,8 +12,6 @@
 
 /build/
 /lib/yarp/yarp.*
-/lib/yarp.bundle
-/lib/yarp.so
 test.rb
 *.dSYM
 *~

CONTRIBUTING.md

@@ -24,6 +24,8 @@ or explicitly running the `compile` task:
 
 ``` sh
 bundle exec rake compile test
+# or to just compile the C extension ...
+bundle exec rake compile:yarp test
 ```
 
 ## Documentation

Rakefile

@@ -64,14 +64,14 @@ task "compile:yarp" => ["configure", "templates"] # must be before the Extension
 Rake::ExtensionTask.new(:compile) do |ext|
   ext.name = "yarp"
   ext.ext_dir = "ext/yarp"
-  ext.lib_dir = "lib"
+  ext.lib_dir = "lib/yarp"
   ext.gem_spec = Gem::Specification.load("yarp.gemspec")
 end
 
 # So `rake clobber` will delete generated files
 CLOBBER.concat(TEMPLATES)
 CLOBBER.concat(["configure", "Makefile", "build", "config.h.in", "include/yarp/config.h"])
-CLOBBER << "lib/yarp.#{RbConfig::CONFIG["DLEXT"]}"
+CLOBBER << "lib/yarp/yarp.#{RbConfig::CONFIG["DLEXT"]}"
 
 TEMPLATES.each do |filepath|
   desc "Template #{filepath}"

ext/yarp/extconf.rb

@@ -11,7 +11,7 @@ def configure
         configure_c_extension
         configure_rubyparser
 
-        create_makefile("yarp")
+        create_makefile("yarp/yarp")
       end
 
       def configure_c_extension

lib/yarp.rb

@@ -240,4 +240,5 @@ def self.newlines(source)
 require_relative "yarp/ripper_compat"
 require_relative "yarp/serialize"
 require_relative "yarp/pack"
-require "yarp.so"
+
+require "yarp/yarp"

tasks/check_manifest.rake

@@ -36,7 +36,7 @@ task :check_manifest => [:templates, "configure"] do
     java/org/yarp/Loader.java
     java/org/yarp/Nodes.java
     java/org/yarp/Parser.java
-    lib/yarp.{jar,so,bundle}
+    lib/yarp/yarp.{so,bundle,jar}
   ]
 
   intended_directories = Dir.children(".")