Add readme for survey backend

0xpr03 · 0xpr03 · commit 773ceddbdb42 · 2019-02-20T22:49:15.000+01:00
Signed-off-by: Aron Heinecke &lt;aron.heinecke@t-online.de&gt;
diff --git a/survey_backend/README.md b/survey_backend/README.md
@@ -0,0 +1,7 @@
+# Survey Backend
+
+This is the survey backend for VAT, used for gathering opt-in Android API version information.
+
+## Building
+`cargo build --release`
+
