add travis CI

41437437 · Laurent Heirendt · 97058772 · 41437437
Verified Commit 41437437 authored Feb 09, 2021 by Laurent Heirendt ✈
--- a/.travis.yml
+++ b/.travis.yml
+language: julia
+
+branches:
+  only:
+    - master
+
+os:
+    - linux
+
+julia:
+    - 1.0
+    - 1.5
+
+notifications:
+    email: false