logd: document the decision to use compression instead of chatty

Open README.compression.md in a markdown viewer for details.

Test: vscode and gitiles render this correctly
Change-Id: Iaa0093dc565b5c6bb016c9e97248375f0906d0c8
5 files changed
tree: a158d4e93eb81165650738a64f74184189b44120
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/