Merge pull request #69 from JuliaGaussianProcesses/devmotion-patch-1

Update Travis configuration

Author: theogf

.travis.yml

@@ -1,5 +1,8 @@
 ## Documentation: http://docs.travis-ci.com/user/languages/julia/
 language: julia
+branches:
+  only:
+    - master
 os:
   - linux
   - osx
@@ -8,16 +11,16 @@ julia:
   - 1.3
   - 1.4
   - nightly
- 
 notifications:
   email: false
 after_success:
-  # push coverage results to Coveralls
-  - julia -e 'using Pkg; Pkg.add("Coverage"); using Coverage; Coveralls.submit(process_folder())'
+  - if [[ $TRAVIS_JULIA_VERSION = 1.4 ]] && [[ $TRAVIS_OS_NAME = linux ]]; then
+      julia -e 'using Pkg; Pkg.add("Coverage"); using Coverage; Coveralls.submit(process_folder())';
+    fi
 jobs:
   include:
     - stage: "Documentation"
-      julia: 1.0
+      julia: 1.4
       os: linux
       script:
         - export DOCUMENTER_DEBUG=true