only build on osx

Signed-off-by: Adam Ratzman <adam@adamratzman.com>

Author: adamint

.travis.yml

@@ -1,7 +1,6 @@
 language: java
 os:
   - osx
-  - windows
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
   - rm -fr $HOME/.gradle/caches/*/plugin-resolution/