Merge pull request #1 from wagnert/0.5.8-beta

Set version 0.5.8-beta in build.default.properties file
Merge pull request #2 from wagnert/0.5.8-beta

Format class doc to PSR-2 standard
Format classes to PSR-2 standard
Format file and class comments
Format file and class comments
Merge pull request #3 from dittertp/0.5.8-beta

Format classes to PSR-2 standard
refactoring of annotations
Merge pull request #4 from wick-ed/0.5.8-beta

reviewed with 0.5.8-beta7
minor refactoring to comply with pbc
Merge pull request #5 from wick-ed/0.5.8-beta

reviewed with 0.5.8-beta
Add travis configuration files + refactor build.xml