Travis able to build tags following the tag naming convention

Jonathan DEKHTIAR · web-flow · commit cc39503f97e5 · 2018-06-01T18:04:05.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,6 +8,7 @@ addons:
 branches:
   only:
     - master
+    - /\d+\.\d+(\.\d+)?(\S*)?$/
 
 python:
   - "2.7"
