allow failures on nightly builds

.travis.yml

@@ -8,12 +8,7 @@ julia:
   - nightly
 notifications:
   email: false
-# uncomment the following lines to override the default test script
-#script:
-#  - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-#  - julia -e 'Pkg.clone(pwd()); Pkg.build("PhyloModels"); Pkg.test("PhyloModels"; coverage=true)'
-after_success:
-  # push coverage results to Coveralls
-  - julia -e 'cd(Pkg.dir("PhyloModels")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
-  # push coverage results to Codecov
-  - julia -e 'cd(Pkg.dir("PhyloModels")); Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'
+matrix:
+  allow_failures:
+    - julia: nightly
+  fast_finish: true