Added interfaces / classes around Synthesizer.
maven deploy
Fixed compile errors
MidiSystem.getTransmitter() / getReceiver() returns MidiDeviceTransmitter / MidiDeviceReceiver implemented instance.
Fixed exception
Merge branch 'feature/add_j.s.m.Synthesizer' into develop

Conflicts:
	.gitignore
	MIDIDriver/build.gradle
	MIDIDriver/snapshots/jp/kshoji/midi-driver/0.0.1-SNAPSHOT/maven-metadata.xml
	MIDIDriver/snapshots/jp/kshoji/midi-driver/0.0.1-SNAPSHOT/maven-metadata.xml.md5
	MIDIDriver/snapshots/jp/kshoji/midi-driver/0.0.1-SNAPSHOT/maven-metadata.xml.sha1
	MIDIDriver/snapshots/jp/kshoji/midi-driver/maven-metadata.xml
	MIDIDriver/snapshots/jp/kshoji/midi-driver/maven-metadata.xml.md5
	MIDIDriver/snapshots/jp/kshoji/midi-driver/maven-metadata.xml.sha1
	MIDIDriverSample/build.gradle