…ile building connection chain of proxies. Bumped version to 2.6.2 (#80)

* Fixed bug in createConnectionChain where host property was ignored while building connection chain of proxies. Bumped version to 2.6.2

The current implementation returns a socket to the first proxy in the chain - this is the bug (reproduce: the example in the README does not work). The method "createConnectionChain" should return a socket to the final destination which is tunnelled through the given proxies. Therefore each iteration over the array of proxies must carry forward the socket. This PR is implementing this and hence fixing the bug.

* remove ip package

At least ‎SocksClient.createUDPFrame expects that: `buff.writeUInt32BE(ipv4ToInt32(options.remoteHost.host))`.

`>>> 0` is fast and easy way to make integer unsigned:
`[200,200,200,200].reduce((acc, part) => (acc << 8) + part, 0)`
`-926365496`
`[200,200,200,200].reduce((acc, part) => (acc << 8) + part, 0) >>> 0`
`3368601800`