Add -B/--bind parameter to yard server command

Closes #608, #615

lib/yard/cli/server.rb

@@ -181,6 +181,9 @@ def optparse(*args)
         opts.on('-d', '--daemon', 'Daemonizes the server process') do
           server_options[:daemonize] = true
         end
+        opts.on('-B HOST', '--bind', 'The host address to bind to') do |host|
+          server_options[:Host] = host.to_s
+        end        
         opts.on('-p PORT', '--port', 'Serves documentation on PORT') do |port|
           server_options[:Port] = port.to_i
         end

spec/cli/server_spec.rb

@@ -173,6 +173,24 @@ def mock_file(filename, content = nil)
       run '--daemon'
     end
 
+    it "should accept -B, --bind" do
+      @server_options[:Host] = 'example.com'
+      run '-B', 'example.com'
+      run '--bind', 'example.com'
+    end    
+
+    it "should bind address with WebRick adapter" do
+      @server_options[:Host] = 'example.com'
+      run '-B', 'example.com', '-a', 'webrick'
+      run '--bind', 'example.com', '-a', 'webrick'
+    end  
+
+    it "should bind address with Rack adapter" do
+      @server_options[:Host] = 'example.com'
+      run '-B', 'example.com', '-a', 'rack'
+      run '--bind', 'example.com', '-a', 'rack'
+    end          
+
     it "should accept -p, --port" do
       @server_options[:Port] = 10
       run '-p', '10'