Update picard dependency to htsjdk version 1.118

Picard/HTSJDK/samtools changed its package structure and library name after version 1.102.

There still isn't a proper htsjdk release to Maven Central but they are working towards it.  Meanwhile, version 1.118 is available here

http://search.maven.org/#artifactdetails|org.seqdoop|htsjdk|1.118|jar

```bash
$ wget http://repo1.maven.org/maven2/org/seqdoop/htsjdk/1.118/htsjdk-1.118.jar
```

If this pull request is merged, the tutorial (and wrapper script, if any) classpath will have to be changed (remove picard-1.102.0.jar and add htsjdk-1.118.jar).