Fix for issue #183 - okHttpClient timeout settings

[steyng]

This is the proposed fix for #183 where the timeout settings do not appear to get used for the http client configuration.

[stokpop]

This pull request seems to fix the same "timeouts not used" issue as this pull request: #178

Can these pull request be merged?

[steyng]

I had missed pull request #178. Have aligned this with #178 and added in some of the default timeouts suggested by @stokpop - set timeouts similar to okHttpClient, i.e.

        public static final long DEFAULT_CONNECT_TIMEOUT = 3000;
        public static final long DEFAULT_WRITE_TIMEOUT = 10000; // 0 means no timeout
        public static final long DEFAULT_CALL_TIMEOUT = 0;
        public static final long DEFAULT_READ_TIMEOUT = 10000;