Merge pull request #3 from caniszczyk/master

Add TravisCI support and update the README
updated readme
added zero-copy section to nutcracker readme.md
updated README.md
close server connection on a stray response and send "SERVER_ERROR Invalid argument" to all outstanding client requests on the given server connection. Bug found by yashh and bmatheny
version 0.1.19 release
log error for request whose keys exceed maximum key length
patch to support kqueue
recommendation doc for running nutcracker in production
updated doc
updated doc
updated doc
abstract out the event interface
add nc_epoll.c nc_kqueue.c and  remove nc_event.c
updated readme
fix log_hexdump and loga_hexdump
fix macro definition strXcmp error for big endian
add redis option to configuration file
refactor memcache parsing code into proto directory
on msg_repair, msg->pos should point to nbuf->pos and not nbuf->last