added nightly optional

Author: matbesancon

.travis.yml

@@ -5,18 +5,17 @@ os:
 #  - osx
 julia:
   - 0.6
-#  - nightly
+  - nightly
+
+matrix:
+  allow_failures:
+    - julia: nightly
+
 notifications:
   email: false
 git:
   depth: 99999999
 
-## uncomment the following lines to allow failures on nightly julia
-## (tests will run but not make your overall status red)
-#matrix:
-#  allow_failures:
-#  - julia: nightly
-
 ## uncomment and modify the following lines to manually install system packages
 #addons:
 #  apt: # apt-get for linux