Better travis + enable mac os x

.travis.yml

@@ -1,12 +1,22 @@
 language:
     - cpp
 
+os:
+  - linux
+  - osx
+
 compiler:
     - clang
     - gcc
 
-sudo: required
-dist: trusty
+matrix:
+  allow_failures:
+    - os: osx
+  include:
+    - os: linux
+      dist: trusty
+      sudo: required
+    - os: osx
 
 env:
     global:
@@ -22,12 +32,22 @@ env:
         - BUILD_EXAMPLES="ON" BUILD_TESTS="ON" CMAKE_BUILD_TYPE="Debug"   HTTPP_PARSER_BACKEND=Stream USE_BOOST_PROMISE=OFF
 
 
+addons:
+    apt:
+        packages:
+            - clang-3.6
+            - g++-4.8
+            - libboost-all-dev
+            - libssl-dev
+            - libtbb-dev
+            - cmake
+            - libcurl4-openssl-dev
+            - libhwloc-dev
+
 before_install:
     - git submodule update --init --recursive
-
-install:
-    - sudo apt-get update
-    - sudo apt-get install -y clang-3.6 g++-4.8 libboost-all-dev libssl-dev libtbb-dev cmake
+    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update          ; fi
+    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install boost tbb cmake hwloc; fi
 
 before_script:
     # update compilers