Use latest version of Tycho, jacoco-maven-plugin and Eclipse in Tycho example

Use latest version of:
- Tycho: 0.12.0 to 0.19.0
- jacoco-maven-plugin: 0.5.3.201107060350 to 0.6.4.201312101107, need to modify 'includes' tag
- Eclipse Target Platform: indigo to Kepler, need to modify junit dependency