revised modal helper
model helper revised version accepts size variations modal id specification and js code injection
Validation error messages on bootstrap-themed forms are no longer hidden;
also applied Boostrap CSS to make them fit with the look of the page.

Signed-off-by: Judith Meyer <yutian.mei@gmail.com>
Including CSS
Update README.md
Undid changes to README
fixed missing bootstrap-modal class to main modal div
drop travis ruby support for 1.8 and add 2.1
added tabindex value
Merge pull request #748 from Sprachprofi/master

Validation error messages on themed forms are no longer removed
Merge pull request #737 from coppolaf/injectable-modals

Injectable modals
update readme for issue 728
Merge pull request #752 from toadkicker/update_readme_issue_728

update readme for issue 728
glyph tag renders <i> element by default, set tag option otherwise
update documentation for glyph helper
allow classes to be set in bootstrap_flash helper
allow options to be passed into the breadcrumb helper
update doc
syntax fix
syntax fix