Updates OSX deployment target for travis build.
This version should have the clock_gettime function
@@ -27,7 +27,7 @@ matrix:
- os: osx
osx_image: xcode7.3
compiler: clang
- env: MACOSX_DEPLOYMENT_TARGET=10.11
+ env: MACOSX_DEPLOYMENT_TARGET=10.12
- os: linux
dist: trusty
compiler: gcc
