add template method make_array
Merge pull request #7 from MarkaPola/feature/json_array

add template method make_array
Replaced std::pair with basic_json<C>::name_value_pair
Changes to json is<T> and as<T>
Changes to json is<T> and as<T>
Added accessors name() and value() to name_value_pair
Added test case, removed JSONCONS_NO_CXX11_RVALUE_REFERENCES
Readme
as_value -> value_adapter
Readme