Enable Travis CI for all branches named hotfix-SEMVER.

Author: andersio

.travis.yml

@@ -9,6 +9,7 @@ branches:
     - master
     # Credit: @Omnikron13, https://github.com/mojombo/semver/issues/32
     - /^(\d+\.\d+\.\d+)(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?$/
+    - /^hotfix-(\d+\.\d+\.\d+)(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?$/ 
 before_script:
   - git submodule update --init --recursive
 script: