Merge pull request #21 from chives/dev-1.2

Added default translated choices to isNull comparison and boolean field type
Updated datasource dependency
Polished README.md and other docs
Updated datasource-bundle stable version in intsallation docs
Merge pull request #23 from norzechowicz/readme

Polished README.md and other docs
Update installation.md
Update basic_usage.md
Added .yml configuration builder
Updated docs
Fixed typos
Merge pull request #24 from norzechowicz/configuration

Added .yml configuration builder
Fixed configuration builder listener registration
Merge pull request #25 from norzechowicz/configuration

Fixed configuration builder listener registration
Fixed dependencies