Add Socket support.
Add Socket support.
Merge remote-tracking branch 'origin/master'

Conflicts:
	pom.xml
	src/main/scala/com/ecfront/rpc/http/HttpResult.scala
	src/main/scala/com/ecfront/rpc/http/client/HttpClient.scala
	src/main/scala/com/ecfront/rpc/http/server/HttpServer.scala
	src/test/scala/com/ecfront/rpc/http/HttpSpec.scala