Merge pull request #518 from lixun910/GeoDaCenter/1.8.12patch

Geo da center/1.8.12patch

README.md

@@ -74,17 +74,3 @@ Below is a list of some of these that we'd like to acknowledge.
         License: unknown
         Links: http://www.tandfonline.com/doi/abs/10.1080/10867651.2002.10487556
 
-* logger.h source code
-
-        Author: Seweryn Habdank-Wojewodzki
-        Note: We have copied the source for logger.h and modified it slightly
-        to work with wxString.
-        License: Boost Software License - Version 1.0
-        Links: http://accu.org/index.php/journals/1304
-
-* nullstream.h source code
-
-        Author: Maciej Sobczak
-        License: See logger.h in included source files
-        Links: http://www.msobczak.com/
-