[PATCH v4 13/21] README: add a build badge (status of the Azure Pipelines build)

["Johannes Schindelin via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Johannes Schindelin <johannes.schindelin@xxxxxx>

Just like so many other OSS projects, we now also have a build badge.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index f920a42fad..764c480c66 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+[![Build Status](https://dev.azure.com/git/git/_apis/build/status/test-git.git)](https://dev.azure.com/git/git/_build/latest?definitionId=2)
+
 Git - fast, scalable, distributed revision control system
 =========================================================
 
-- 
gitgitgadget