[maven-release-plugin] prepare release json-unit-parent-1.1.4
[maven-release-plugin] prepare for next development iteration
Update README.md
Absence/presence tests added
Merge remote-tracking branch 'origin/master' into jackson-1.x

Conflicts:
	json-unit-core/src/test/java/net/javacrumbs/jsonunit/core/internal/DiffTest.java