Revert "Suspend OSX support for civetweb for an indefinite period"

This reverts commit 80dc0b3826c0ba9bb1e184e1c8148aabc9f915eb.

.travis.yml

@@ -8,7 +8,7 @@ compiler:
 
 os:
   - linux
-#  - osx
+  - osx
 
 env:
   global: