removed autotools intermediate files from source code; use autoreconf -iv.
diff --git a/.travis.yml b/.travis.yml
index 94ef748..10aef0d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,4 +2,4 @@
 compiler:
   - gcc
   - clang
-script: ./configure && make && make check
+script: autoreconf -iv && ./configure && make && make check