[Fix #1287] check if next line is end of block

This fixes the EmptyLinesAroundAccessModifier cop by accpeting a missing blank
line after the access modifer if the next lines closes a block (with and `end`)

update changelog

change method name to `body_end`
Merge pull request #1318 from sch1zo/ignore_missing_blank_line_after_access_modifier_at_end_of_block

Ignore missing blank line after access modifier at end of block