diff --git a/.gitignore b/.gitignore
index decca8f..04e9809 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,5 @@
 doc/api
 user_manual.md
 user_manual_xxpath.md
-pkg/
\ No newline at end of file
+pkg/
+.rbenv-gemsets
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..d99761c
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,12 @@
+language: ruby
+
+rvm:
+  - 2.3
+  - 2.4
+  - 2.5
+  #- 1.9    # TODO (1 test fails)
+  #- jruby  # TODO (rvm setup fails?)
+
+
+before_script:
+  - set