The issue, that if user disable strict gherkin check, it will lead to
situation, when wrong Error be raised. For the current situation it was
a message, that Step is defined outside of Background section.
Current patch makes check for orphan steps more tolerant for features
without strict gherkin syntax.
Also README was updated to show explicitly, that using "When, Then" is
prohibited in "Background" section.
Sergey Kraynev