Feature/ws windows (#86)

* try to build ws on window on travis 📮

* cmake invocation fixed on windows 🐝

* Can use mbedtls to calculate hmac + no openssl config option

* build only windows on travis 🕢

* run msbuild 💷

* proper command to build 🕛

* some build fixes

* change weird sizeof call 🐙

* warning and missing includes fixes 💮

* ifdef out statsd code on windows 🐍

* logic invertion in ifdef 👄

* bring back makefile 📜

* command line tool is built with mbedtls 🏥

CMakeLists.txt

@@ -124,7 +124,7 @@ add_library( ixwebsocket STATIC
     ${IXWEBSOCKET_HEADERS}
 )
 
-if (APPLE AND USE_TLS)
+if (APPLE AND USE_TLS AND NOT USE_MBED_TLS)
   target_link_libraries(ixwebsocket "-framework foundation" "-framework security")
 endif()