Add -pthread flag for C++ build in Sublime Text 2

1. In Sublime Text 2, go to "Preferences -> Browse packages..".
2. Inside C++ directory, find the "C++.sublime-build" and open it.
3. Use the following:
   {
    "cmd": ["g++", "${file}", "-pthread","-o", "${file_path}/${file_base_name}"],
    "file_regex": "^(..[^:]*):([0-9]+):?([0-9]+)?:? (.*)$",
    "working_dir": "${file_path}",
    "selector": "source.c, source.c++",
    "variants":
   

    [{

   "name": "Run",

   "cmd": ["bash", "-c", "g++ '${file}' -pthread -o '${file_path}/${file_base_name}' && '${file_path}/${file_base_name}'"]

   }]

    }