Bring in newer version of socks5-client
This is to fix an issue in node >0.10.0, see https://github.com/mattcg/socks5-client/commit/8a70fa1d692fc202adf49491d6f06bac1546f04c#diff-e8acc63b1e238f3255c900eed37254b8
Merge pull request #5 from saw/fixdeps

Bring in newer version of socks5-client
0.1.6
Document usage with Request
Merge pull request #4 from mattcg/master

上游合并