add support for IE11
move IE11 support in with the rest of the IE logic
Add support for IE11.
Expand IE11 support.

Make detection criteria less strict to better detect various IE11
User-Agent strings.
Fix to better support older Ruby syntax.
Merge branch 'master' of https://github.com/andrewwillis/useragent into andrewwillis-master

Conflicts:
	lib/user_agent/browsers/internet_explorer.rb
Merge branch 'andrewwillis-master' into terryfinn-add_support_for_ie11

Conflicts:
	spec/browsers/internet_explorer_user_agent_spec.rb
Test another example IE11 UA
Fix some test descriptions
Comment is joined by ;
Merge regexp
Merge branch 'terryfinn-add_support_for_ie11'