Move runng/examples and benches/, runng-sys/, and runng_thrift/ to ow…

…n repositories. runng-sys is submodule `runng_sys`.

.gitmodules

@@ -1,3 +1,3 @@
-[submodule "runng-sys/nng"]
-	path = runng-sys/nng
-	url = https://github.com/nanomsg/nng.git
+[submodule "runng_sys"]
+	path = runng_sys
+	url = https://github.com/jeikabu/nng-rust.git

Cargo.toml

@@ -1,12 +1,5 @@
 [workspace]
 members = [
-    "runng-sys",
-    "runng",
-    "runng_derive",
-    "runng_thrift",
-]
-default-members = [
-    "runng-sys",
     "runng",
     "runng_derive",
 ]

README.md

@@ -14,7 +14,8 @@ Rust [NNG (Nanomsg-Next-Generation)](https://github.com/nanomsg/nng):
 |-|-|-
 | __runng-sys__ | [![runng-sys crate](https://img.shields.io/crates/v/runng-sys.svg)](https://crates.io/crates/runng-sys) | bindings to native NNG library
 | __runng__ | [![runng crate](https://img.shields.io/crates/v/runng.svg)](https://crates.io/crates/runng) | high-level wrapper for NNG
-| __runng_thrift__ | [![runng-thrift crate](https://img.shields.io/crates/v/runng-thrift.svg)](https://crates.io/crates/runng-thrift) | NNG as [Apache Thrift](https://github.com/apache/thrift) transport
+| [__runng_thrift__](https://github.com/jeikabu/runng_thrift) | [![runng-thrift crate](https://img.shields.io/crates/v/runng-thrift.svg)](https://crates.io/crates/runng-thrift) | NNG as [Apache Thrift](https://github.com/apache/thrift) transport
+| [__runng_examples__](https://github.com/jeikabu/runng_examples) | | Additional runng examples
 
 ## Usage