Bumping version to 0.5.1
Adding example of choice validation
Added Exception getMessages() example
Increasing flexibility in ValidationChoice constructor
Adding possibility to add validators later in a choice and preparing for zero
Adding test for zero in a combo
Adding custom validator example
Setting default validator message
Adding CONTRIBUTE.md
Simplifying Readme file
Allowing construct with validators in combo
Adding list of validators to readme
Merge branch 'hotfix/v0.5.1'