Add recipe for continuous integration builds on https://travis-ci.org
diff --git a/.travis.yml b/.travis.yml
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index 0000000..af62be4
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,16 @@
+# YAML definition for travis-ci.com continuous integration.
+# See https://docs.travis-ci.com/user/languages/c
+
+language: c
+
+compiler:
+ - gcc
+ - clang
+
+before_script:
+ - mkdir build
+ - cd build
+ - cmake -G 'Unix Makefiles' ..
+
+script:
+ - make