Update readme with props for #66
Updating in-screen help:
* Removing installation tab (after all, user already installed the plugin)
* Adding Configuration Filters tab
Removing OpenX not implemented provider. Ain't nobody got time for that
Coding standards
Updating POT
Merge branch 'master' of github.com:Automattic/Ad-Code-Manager
Updating Tested Up To
Prefix tag ids for DoubleClick Async

Prefixes the tag ids, because ids must not start with a number in html.
This allows the regions to be styled with css.

See https://github.com/Automattic/Ad-Code-Manager/issues/73
Merge pull request #74 from nickdaugherty/master

Prefix tag ids in DoubleClick Async provider. Props @nickdaugherty
Tag v0.4.1
Bump working version
Added .DS_Store to .gitignore
Merge remote-tracking branch 'upstream/master'
Add robots.txt entries for provider's crawlers

Google recommends setting an empty robots.txt Disallow for their user
agent, Mediapartners-Google for sites serving their ads.

To prevent users from having to add these entries on their own, we can
add them automatically. Each provider now has a $crawler_user_agent
parameter, and the Disallows are filterable.
Updated changelog and stable tag
Merge pull request #76 from nickdaugherty/master

Add robots.txt entries for ad provider's crawler automatically, if applicable.
Add additional newline after robots.txt entry

Gotta keep them robots shiny and beautiful!
Caching get_matching_ad_code return value as it might be expensive when there's a lot of ad codes
Merge pull request #77 from Automattic/acm-tag-caching

Caching get_matching_ad_code return value
Use serialize instead of implode to generate unique cache key per request per ad code. Fix for #949c729bc0dae4fe9e04e9727bedcd01f145551f