Fix a typo in build process
Spelling

fixed some typo's and spelling errors. Changed some help files to fix the sometimes awkward wording.
Make icns compatible from Leopard (10.5) to Mountain Lion (10.8)

oldiconutil tool (https://github.com/uliwitness/oldiconutil) was used.
Leopard cannot cache Icns bigger than 1 Mbyte; so for the app icon, I used the option --compression jp20.95
Use integrated method for displaying unread articles count in Dock.
More language fixes

Some additional language fixes. Attribution added.
Merge pull request #167 from Konstruktionist/Dutch-Localization

Dutch localization
Fix typo and comment
Handle icon badge when there is no unread articles left.
Merge pull request #164 from barijaona/bugfixes

Leopard compatible icon, leopard and better method for displaying unread articles count, and fix a typo in build process.