Initial checkin of gRPC to third_party/

third_party/grpc/examples/ruby/README.md

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+gRPC in 3 minutes (Ruby)
+========================
+
+BACKGROUND
+-------------
+For this sample, we've already generated the server and client stubs from [helloworld.proto][]
+
+PREREQUISITES
+-------------
+
+- Ruby 2.x
+This requires Ruby 2.x, as the gRPC API surface uses keyword args.
+If you don't have that installed locally, you can use [RVM][] to use Ruby 2.x for testing without upgrading the version of Ruby on your whole system.
+RVM is also useful if you don't have the necessary privileges to update your system's Ruby.
+
+  ```sh
+  $ # RVM installation as specified at https://rvm.io/rvm/install
+  $ gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+  $ \curl -sSL https://get.rvm.io | bash -s stable --ruby=ruby-2
+  $
+  $ # follow the instructions to ensure that your're using the latest stable version of Ruby
+  $ # and that the rvm command is installed
+  ```
+- *N.B* Make sure your run `source $HOME/.rvm/scripts/rvm` as instructed to complete the set-up of RVM.
+
+INSTALL
+-------
+- [Install gRPC Ruby][]
+
+- Use bundler to install the example package's dependencies
+
+  ```sh
+  $ # from this directory
+  $ gem install bundler # if you don't already have bundler available
+  $ bundle install
+  ```
+
+Try it!
+-------
+
+- Run the server
+
+  ```sh
+  $ # from this directory
+  $ bundle exec ./greeter_server.rb &
+  ```
+
+- Run the client
+
+  ```sh
+  $ # from this directory
+  $ bundle exec ./greeter_client.rb
+  ```
+
+Tutorial
+--------
+
+You can find a more detailed tutorial in [gRPC Basics: Ruby][]
+
+[helloworld.proto]:../protos/helloworld.proto
+[RVM]:https://www.rvm.io/
+[Install gRPC ruby]:../../src/ruby#installation
+[gRPC Basics: Ruby]:http://www.grpc.io/docs/tutorials/basic/ruby.html