remove unnecessary code
refactoring similar code file download.
add function save gif image as mp4
- cache table remake
- added download image from twitpic, yfrog
- changed location settings.xml & cache.db
- increase default fetching favorites tweet count to 2000
- add command line option
implement MediaProvider
remove Console.OutputEncoding
add get them all option
implement 'get them all'
add helper batch files
update version info
Merge branch 'new-features'