Update Getting Started

Right now the Getting Started section in the README is a bit outdated.

People who are just getting started with this library are not likely to have all of the dependencies needed (latest version of VS, .NET Core, etc.) to compile the source code and demo application.

I am looking for people newer to this project to either comment or submit a PR with suggestions on how to improve this.

Some ideas to consider:

• Getting started section so that it is as simple as possible for someone new to the library.
• Consider including a link to my examples repo
• Consider moving up the link to the releases page with the pre-compiled demo app from the See It In Action section
• Remove the Source Code section and instead simply link over to the wiki page

检查 README 的 Getting Started、See It In Action 和 Building the Source 部分，以及链接的 Compiling From Source wiki 页面。更新入门指南，使先决条件和预编译演示易于找到，并确保从源代码构建的说明指向 wiki；完成的标准是新手无需依赖过时的设置信息即可按照文档化的路径操作。