Update LIVR test suite to v0.6
Add "url", "iso_date" rules, support for simpler syntax (without double braces) for "one_of" and "list_of"
Implement "remove" and "leave_only" rules, add flags support to "like" rule
Correct error code in LIVR suite for "not_empty_list" negative test with empty object ({})
Change arguments order in assertEquals() calls for correct GOT\EXPECTED test output hints
Change function names to camelCase
Implement registerAliasedDefaultRule() method
Add suite-based test for aliased rules, bugfixes
Fixes in README
Describe uning registerAliasedRule() in README
README syntax highlighting
More strict validation for flags in "like" rule
Merge pull request #7 from SDSWanderer/master

Implement v0.6 LIVR specification