DOC: Address issue where documentation is excluded due to a gitignore rule.
diff --git a/.gitignore b/.gitignore
index ec1545a..762f5ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,7 @@
 *.log*
 *.trace*
 haproxy-*
+!doc/haproxy-*.txt
 !src/*.c
 make-*
 dlmalloc.c