Remove .github from .gitignore

Change-Id: I6b59cd2398d2b55cdcdaa09a7ab9b0d19850a5ac
diff --git a/.gitignore b/.gitignore
index cbec024..044bf9c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@
 *~
 .*
 !.gitignore
+!.github
 
 # /src/main/antlr/cosmas/
 /src/main/antlr/cosmas/c2ps_regex.g