Don't install nginx twice on OSX Travis build.

.travis.yml

@@ -6,14 +6,9 @@ addons:
     packages:
     - libunwind8
 before_install:
-  - if test "$TRAVIS_OS_NAME" == "osx"; then brew update; brew install nginx; brew install openssl; brew link --force openssl; fi
+  - if test "$TRAVIS_OS_NAME" == "osx"; then brew update; brew install nginx; brew install openssl; brew link --force openssl; else ./install-nginx.sh; fi
 install:
-  - curl -sSL http://nginx.org/download/nginx-1.8.0.tar.gz | tar zxfv - -C /tmp && cd /tmp/nginx-1.8.0/
-  - ./configure --prefix=$HOME/nginxinstall --with-http_ssl_module
-  - make
-  - make install
   - export PATH="$PATH:$HOME/nginxinstall/sbin/"
-  - cd $OLDPWD
 mono:
   - 4.0.5
 os:

install-nginx.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+curl -sSL http://nginx.org/download/nginx-1.8.0.tar.gz | tar zxfv - -C /tmp && cd /tmp/nginx-1.8.0/
+./configure --prefix=$HOME/nginxinstall --with-http_ssl_module
+make
+make install