Changes to Flickr::API2

2.00  2011-04-28
    * Initial version, forked from Flickr::API 1.04

2.01  2011-04-29
    * Added missing dependency upon JSON.

2.02  2011-05-02
    * Skip online API tests unless HTTP access is available.
    * Adjust Makefile META info regarding Perl versions.
    * Minor other test improvements.
    * Use test_requires instead of build_requires in Makefile.