Create instructions for building applications without whole OS

[MinusPL]

Due to rapid grow of kernel and standard library it might be better to create instructions how to build only one application, without touching whole kernel source or c library source. This way we can make creating applications for MicrOS way smoother experience. Cross compilation is already used anyway to build kernel, library, environment, so why not create instructions on building only application, especially since we can guarantee that release version of OS is stable enough to build on it software using prebuilt c library.