Eq now returns an empty Selector when an invalid index is given
Updated docs for First() and Last()
Added test TestLastEmpty
Merge pull request #32 from siriustnt/mybranch

Eq now returns an empty Selector when an invalid index is given
add travis badge, update copyright year
Fix indentation

Indentation is inconsistent in the docs.
Merge pull request #35 from aybabtme/patch-1

Fix indentation
update doc, example
lint
more linting
final linting
test go1.0 compat
add go1.1+ requirement