.travis.yml: added osx along linux

diff --git a/.travis.yml b/.travis.yml
index abc070e..02c0c18 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,10 @@ language: c
 
 sudo: false
 
+os:
+  - linux
+  - osx
+
 compiler:
   - gcc
   - clang