Bumped version to 1.1.0-SNAPSHOT
Removed Travis configuration

Because the project depends on lcm-gen to build, Travis isn't much use. I
shouldn't have included it in the first place.
Fixed bug for concurrent modification of listeners
Added Filter interface and tests
Added conjunctive and disjunctive composite filters and tests
Added type, status, and protocol filters and tests
Added FindPeer function and tests
Updated the README
Tagging 1.1.0 release