updates CI config to use 0.6

Author: ssfrr

.travis.yml

@@ -4,9 +4,7 @@ os:
   - linux
   - osx
 julia:
-  # - release
-  - 0.4
-  - 0.5
+  - 0.6
 notifications:
   email: false
 script:

appveyor.yml

@@ -1,9 +1,6 @@
 environment:
   matrix:
-  - JULIAVERSION: "julialang/bin/winnt/x86/0.4/julia-0.4-latest-win32.exe"
-  - JULIAVERSION: "julialang/bin/winnt/x64/0.4/julia-0.4-latest-win64.exe"
-  - JULIAVERSION: "julialang/bin/winnt/x86/0.5/julia-0.5-latest-win32.exe"
-  - JULIAVERSION: "julialang/bin/winnt/x64/0.5/julia-0.5-latest-win64.exe"
+  - JULIAVERSION: "julialang/bin/winnt/x64/0.6/julia-0.6-latest-win64.exe"
 
 notifications:
   - provider: Email