[Rev 03] RFR: Updated intro

[Magnus Ihse Bursie]

On Tue, 2 Jun 2020 21:07:10 GMT, Jesper Wilhelmsson <jwilhelm at openjdk.org> wrote:

>> I re-wrote the intro to talk more about the present and less about the past.
>
> Jesper Wilhelmsson has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fixed more index

Marked as reviewed by ihse (no project role).

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PR: https://git.openjdk.java.net/guide/pull/15