Update .travis.yml

Author: MikeInnes

.travis.yml

@@ -4,7 +4,7 @@ os:
   - linux
   - osx
 julia:
-  - 0.6
+  - 1.0
   - nightly
 notifications:
   email: false
@@ -13,9 +13,9 @@ git:
 
 ## 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
+matrix:
+ allow_failures:
+ - julia: nightly
 
 ## uncomment and modify the following lines to manually install system packages
 #addons: