Bug-fix (accidental reset of <select> value):
Opening dropdown and, then, closing it without selecting any option
(click outside of the dropdown) resulted in setting empty value
on select (even if some value has already been selected!).

Addtional note:
Added .ruby-gemset and .ruby-version to .gitignore
Merge pull request #1 from arturkot/master

Bug-fix (accidental reset of <select> value):