Adding Travis CI
Updated Travis configuration
Forcing Travis to use Maven 3.1.1 until SHRINKRES-203 is fixed
Using $MAVEN_SKIP_RC to force Maven binary location
SHRINKRES-205 Forking compiler if not available on classpath
SHRINKRES-204 Fixed ArchiveFilteringUtils on Windows
SHRINKRES-181 MavenArtifactInfo is missing <optional> info
SHRINKRES-181 Added possitive test for optional dependency
SHRINKRES-190 Adding Processor for MavenCoordinates
SHRINKRES-165 Honor maven.legacyLocalRepo property