Update Readme.txt

Readme.txt

@@ -1,6 +1,9 @@
-2015/12/25
- Fix bug when create monitor to check reader/card slot status.
- Update lib version to 1.31.1, new lib add i386 and x64 support, the totally arch will included (armv7,armv7s,arm64,i386,x64)
+
+2016/2/24
+ Fix SCardGetStatusChange() may (not always, but frequently) return “SCARD_E_READER_UNAVAILABLE” problem
+2015/12/25
+ Fix bug when create monitor to check reader/card slot status.
+ Update lib version to 1.31.1, new lib add i386 and x64 support, the totally arch will included (armv7,armv7s,arm64,i386,x64)
 2015/06/16
  Update iOS SDK
 2014/12/03
@@ -18,11 +21,11 @@
 2014/05/12
  Support background running
  Fixed bug on iOS
-2013/08/19
+2013/08/19
 
  Upgrade SDK, to support new bR301 which firmware is 2.0
-
-
+
+
 2013/04/21
  Updated sample code
  Add developer Guide and FAQ