add appveyor back

Author: CarloLucibello

.travis.yml

@@ -4,7 +4,7 @@ language: julia
 os:
   - linux
   - osx
-  - windows
+  # - windows   
 
 julia:
   - 1.0

appveyor.yml

@@ -0,0 +1,45 @@
+environment:
+  matrix:
+  - julia_version: 1
+  - julia_version: nightly
+
+platform:
+  - x86 # 32-bit
+  - x64 # 64-bit
+
+# # Uncomment the following lines to allow failures on nightly julia
+# # (tests will run but not make your overall status red)
+# matrix:
+#   allow_failures:
+#   - julia_version: nightly
+
+branches:
+  only:
+    - master
+    - /release-.*/
+
+notifications:
+  - provider: Email
+    on_build_success: false
+    on_build_failure: false
+    on_build_status_changed: false
+
+install:
+  - ps: iex ((new-object net.webclient).DownloadString("https://raw.githubusercontent.com/JuliaCI/Appveyor.jl/version-1/bin/install.ps1"))
+
+build_script:
+  - echo "%JL_BUILD_SCRIPT%"
+  - C:\julia\bin\julia -e "%JL_BUILD_SCRIPT%"
+
+test_script:
+  - echo "%JL_TEST_SCRIPT%"
+  - C:\julia\bin\julia -e "%JL_TEST_SCRIPT%"
+
+# # Uncomment to support code coverage upload. Should only be enabled for packages
+# # which would have coverage gaps without running on Windows
+# on_success:
+#   - echo "%JL_CODECOV_SCRIPT%"
+#   - C:\julia\bin\julia -e "%JL_CODECOV_SCRIPT%"
+
+after_test:
+  - C:\julia\bin\julia -e "using Pkg; Pkg.add(\"Coverage\"); using Coverage; Codecov.submit(process_folder())"