echo warning message if duplicate statusline func gets added.
Spelling mistake in documentation

spelling error was present in *airline-eclim* part,
integratino -> integration
Merge pull request #298 from Pychimp/master

Spelling mistake in documentation
Added lucius.vim to airline themes
Merge pull request #301 from jonathanfilip/master

Added lucius.vim to airline themes
fix luna ctrlp theming.
add AirlineRefresh command.
add guard for possible undefined window context (#276).
add more documentation about accents. resolves #299.
update readme with link to sample accent configuration.
fix detection of tab count. resolves #304.
a min tab count of 1 is the same as always showing (#304).
AirlineToggle should also toggle the tabline
Merge pull request #313 from edkolev/master

AirlineToggle should also toggle the tabline
fix and improve airline toggling functionality.
detect whether quickfix or location list is open.
implement new unique_tail formatter. resolves #230.
Fix typo in help

Help tag used underscore instead of hyphen.
Merge pull request #321 from tommcdo/master

Fix typo in help