Documentation: Update readme.md with a minor platform fix

Author: jjensen

readme.md

@@ -5,7 +5,7 @@ JamPlus is a very fast and powerful code and data build system built on the code
 
 A sampling of the features in the JamPlus distribution follows:
 
-- **Multiplatform:** Binaries can be easily bootstrapped for Windows, Linux, and Mac OS X.
+- **Multiplatform:** Binaries can be easily bootstrapped for Windows, various Unix systems, and Mac OS X.
 - **Compiler support:** Out of box compiler support for Visual C++ 201x/200x/6, GCC, Clang, and MinGW.
 - **Platform targets:** Platform modules are provided for building for Windows, Linux, macOS, iOS, and Android targets. Additionally, an Xbox 360 console platform is provided as a sample. If the machine has iOS Build Environment for Windows installed (see http://www.pmbaty.com/iosbuildenv/), then iOS builds can be made on a Windows Boot Camp partition.
 - **Workspace/Project Generator:** Output project files for the Visual Studio IDE and Xcode.