Update [email protected] and minor README changes

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "nng-sys"
-version = "1.2.3-rc.1"
+version = "1.2.4-rc.1"
 authors = ["Nathan Kent <[email protected]>", "Jake W <[email protected]>"]
 
 description = "Bindings to NNG (Nanomsg-Next-Generation) aka Nanomsg2"

README.md

@@ -8,21 +8,22 @@ Rust FFI bindings to [NNG](https://github.com/nanomsg/nng):
 ![MIT License](https://img.shields.io/badge/license-MIT-blue.svg)
 ![Rustc 1.31+](https://img.shields.io/badge/rustc-1.31+-lightgray.svg)
 [![travis](https://travis-ci.org/jeikabu/nng-rust.svg?branch=master)](https://travis-ci.org/jeikabu/nng-rust)
-[![appveyor](https://ci.appveyor.com/api/projects/status/10fg3vxtk13rqy93/branch/master?svg=true)](https://ci.appveyor.com/project/jeikabu/nng-rust/branch/master)
+[![Build Status](https://dev.azure.com/jeikabu/nng-rust/_apis/build/status/jeikabu.nng-rust?branchName=master)](https://dev.azure.com/jeikabu/nng-rust/_build/latest?definitionId=1&branchName=master)
 
 ## Usage
 
 Version of this crate tracks NNG: `<NNG_version>-rc.<crate_version>` (e.g. `1.1.1-rc.2`).
 
 To use the __latest crate__ for the most recent __stable version of NNG__ (1.2.x), in `Cargo.toml`:  
 ```toml
-nng-sys = "1.2.3-rc"
+[dependencies]
+nng-sys = "1.2.4-rc"
 ```
 
 Requirements:
 - [cmake](https://cmake.org/) in `PATH`
     - On Linux/macOS: default generator is "Unix Makefiles"
-    - On Windows: default generator is "Visual Studio 15 2017 Win64"
+    - On Windows: default generator is generally latest version of Visual Studio installed
 - _Optional_ libclang needed if using `build-bindgen` feature to run [bindgen](https://rust-lang.github.io/rust-bindgen/requirements.html)
 
 ## Features
@@ -41,13 +42,13 @@ Requirements:
 _Example_) Re-generate FFI bindings with bindgen:
 ```toml
 [dependencies]
-nng-sys = { version = "1.1.1-rc", features = ["build-bindgen"] }
+nng-sys = { version = "1.2.4-rc", features = ["build-bindgen"] }
 ```
 
 _Example_) Disable stats and use Ninja cmake generator:
 ```toml
 [dependencies.nng-sys]
-version = "1.1.1-rc"
+version = "1.2.4-rc"
 default-features = false
 features = ["cmake-ninja"]
 ```