Allow search-cmd commands to use either underscores or dashes, for example, both "set_schema" and "set-schema" are now acceptable.
Allow search-cmd commands to use either underscores or dashes, for example, both "set_schema" and "set-schema" are now acceptable.

wwezhuimeng/riak_search,xuejianhai/riak_search,basho/riak_search,wwezhuimeng/riak_search,basho/riak_search,xuejianhai/riak_search