[jfx-tests] RFR: 8197397: Document steps for setting up and executing manual/automated tests in jfx-tests repo [v2]

[Ajit Ghaisas]

> - Removed README file
> - Added README.md file with details
> 
> For formatted output of README.md - See : https://github.com/aghaisas/jfx-tests/tree/update_readme

Ajit Ghaisas has updated the pull request incrementally with one additional commit since the last revision:

  review fixes

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

Changes:
  - all: https://git.openjdk.org/jfx-tests/pull/11/files
  - new: https://git.openjdk.org/jfx-tests/pull/11/files/76dcf4ea..2597220a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx-tests&pr=11&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx-tests&pr=11&range=00-01

  Stats: 9 lines in 1 file changed: 3 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jfx-tests/pull/11.diff
  Fetch: git fetch https://git.openjdk.org/jfx-tests.git pull/11/head:pull/11

PR: https://git.openjdk.org/jfx-tests/pull/11