[Rev 01] RFR: Created README for the project

[Iris Clark]

On Tue, 26 May 2020 00:19:30 GMT, Jesper Wilhelmsson <jwilhelm at openjdk.org> wrote:

>> A readme file that will serve as the GitHub front page for the project.
>
> Jesper Wilhelmsson has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fixed typos

README.md line 3:

> 2:
> 3: This project maintains the [OpenJDK Developers' Guide](https://openjdk.java.net/guide/).
> 4: The goal of this guide is to answer questions that the developers of the JDK might have around

Capitalize "Project"

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PR: https://git.openjdk.java.net/guide/pull/8