GitHub releases were just the exact same as the LunarG releases,
since the same commit were used for both.
For this reason, we don't think it brings any value, and will stop
publishing new releases on the GitHub page.
Signed-off-by: Nathan Gauër <brioche@google.com>
- Remove Appveyor CI
- Write new "Getting the source" subsection, consolidating material
from a couple of places. Emphasize using the utils/git-sync-deps
script for getting a known-good combination of sources.
- Built artifacts:
- top of tree artifacts are from Kokoro CI bots
- mention Vulkan SDK and Android NDK as alternatives
Fixes: #4577
