Update README.md
Update README.md
Update definitions.json

Extending Exif data (https://github.com/SemanticMediaWiki/SemanticExtraSpecialProperties/issues/16#issuecomment-35824338) to cover the most widely used
Update definitions.json

Fix syntax
Merge pull request #21 from SemanticMediaWiki/Exif

Update definitions.json
Update README.md
Add coverage statistics
Merge pull request #22 from SemanticMediaWiki/coverage

Add coverage statistics
Update .travis.yml
Update .scrutinizer.yml
Add option to specify property visibility via json
Merge pull request #20 from SemanticMediaWiki/visibility

Add option to specify property visibility via json
Update .scrutinizer.yml

`external_code_coverage` doesn't really work because it uses the whole SMW tree for the coverage report `php_code_coverage` doesn't work because classes are not registered via Composer.
Adjust coverage settings
Merge pull request #23 from SemanticMediaWiki/coverage

Adjust coverage settings
Add coverage badge
Improve ShortUrlAnnotatorTest
Merge pull request #24 from SemanticMediaWiki/tests

Improve ShortUrlAnnotatorTest