[mod] change versioning constant to 2.0, e.g. in crawler user agent string
[fix] update PEAR stuff and correct Twitter service, close #26
[fix] use string for name of class in callback method
[mod] add option to config tags
[rem] delete copyright notice from template
- aggregated data is not necessarily copyrighted by the user of the aggregator application
[mod] insert simple media queries to adjust layout on mobile/small devices
[fix] make json_decode method static b/c it is called like that on other places
[fix] test and correct Github service, close #15
[fix] test and adjust Twitter service class, close #24
[add] Service class for Identi.ca support
[fix] mobile enhancement
[mod] update to Twitter API 1.1
[mod] Update Meyer's reset styles to 2.0
[mod] improve responsive styles
[mod] prepare doc files for 2.1 release
[mod] change version number to 2.1
add GitHub Flavored Markdown to README

* This makes the example code easier to read,
  especially when perusing the docs on github
Merge pull request #29 from phlipper/patch-1

add GitHub Flavored Markdown to README