prepared for new maven structure, refs #36
deleted unnecessary files, refs #36
improved .gitignore (added .classpath, .project)
moved project on folder up
added /target to .gitignore
Merge pull request #69 from przytads/36

Moved to new maven standard directory layout, fixes #36

* moved to new maven structure as described here: http://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout.html
* moved project on folder up
* fixed .gitignore for new structure