[Rev 01] RFR: Updated intro

[Jesper Wilhelmsson]

> 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:

  Changes after review

-------------

Changes:
  - all: https://git.openjdk.java.net/guide/pull/15/files
  - new: https://git.openjdk.java.net/guide/pull/15/files/20cb59cb..f3d00ffe

Webrevs:
 - full: https://webrevs.openjdk.java.net/guide/15/webrev.01
 - incr: https://webrevs.openjdk.java.net/guide/15/webrev.00-01

  Stats: 37 lines in 5 files changed: 20 ins; 11 del; 6 mod
  Patch: https://git.openjdk.java.net/guide/pull/15.diff
  Fetch: git fetch https://git.openjdk.java.net/guide pull/15/head:pull/15

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