Merge pull request #71 from Donearm/master

Laederon & Ubaryd themes
add g:airline_exclude_preview option. resolves #72.
move paste indicator into the default section_a value.
fixes intro screen getting clobbered. resolves #68.
add author information into the docs.
replace screenshots with a link to the wiki (#73).
move faq/troubleshooting section into the wiki
Squashed commit of the following:

commit 7cd477ba7fb2f960c9e832626546e12ab939b59e
Merge: b6e3d5c 9f93628
Author: Bailey Ling <bling@live.ca>
Date:   Mon Jul 15 20:07:01 2013 +0000

    Merge branch 'solarized-themes-merge' of https://github.com/seletskiy/vim-airline into seletskiy-solarized-themes-merge

commit 9f936281ed072d1bf545f6f80a5f3c2ba544b9c8
Author: Stanislav Seletskiy <s.seletskiy@office.ngs.ru>
Date:   Mon Jul 15 11:57:14 2013 +0700

    get rid of background detection magic

commit 230b16d3c54fec7d17117c6085c9bdc8c1694375
Author: Stanislav Seletskiy <s.seletskiy@office.ngs.ru>
Date:   Sun Jul 14 12:22:30 2013 +0700

    merge solarized and solarized2

    g:airline_solarized_reduced controls how many colors can change between
    mode switching.
update docs, update link to faq in the wiki
toggle inactive mode the same way as the other modes
add inactive modified support to dark, light, simple. resolves #59.
Fix misspelling of Powerline
add inactive modified theme support to the rest of the themes (except powerlineish).
Merge pull request #74 from jdavis/master

Pedantic misspelling fix
allow themes to determine bold,italic,etc via the generate_color_map function
add old vim-powerline font symbols into the doc. resolves #76.
allow g: gutter to be specified, integrate with vimshell, use get() for :w variables
Add lawrencium support
Merge pull request #80 from bjauy/lawrencium

Add lawrencium support
add reference to the FAQ in the vim doc (#81).