update the readme

readme.md

@@ -269,10 +269,9 @@ Generally speaking, the intent is that you simply include the tinyxml2.cpp and
 tinyxml2.h files in your project and build with your other source code.
 
 There is also a CMake build included. CMake is the general build for TinyXML-2.
-Additional build systems are costly to maintain, and tend to bit-rot. 
 
-A Visual Studio project is included, but that is largely for developer convenience,
-and is not intended to integrate well with other builds.
+(Additional build systems are costly to maintain, and tend to bit-rot. They are
+being removed over time.)
 
 Building TinyXML-2 - Using vcpkg
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