[reSIProcate] travis-ci builds fixed
I've looked at the intermittent problems with builds in travis-ci and I
believe this has been resolved by changing the URL used to retrieve
additional dependency packages. The previous URL was sometimes giving a
timeout.
I've also enabled travis-ci builds for two of the other projects:
reConServer:
https://travis-ci.org/resiprocate/reConServer
https://github.com/resiprocate/reConServer
sendsipmsg demo:
https://travis-ci.org/resiprocate/sendsipmsg
https://github.com/resiprocate/sendsipmsg