Ignore built modules

.gitignore

@@ -8,11 +8,9 @@ docs/*.html
 build/
 *.pyc
 nilmdb/server/interval.c
-nilmdb/server/interval.so
 nilmdb/server/layout.c
-nilmdb/server/layout.so
 nilmdb/server/rbtree.c
-nilmdb/server/rbtree.so
+*.so
 
 # Setup junk
 dist/