add a generic README-OUT.md for future releases

Author: ilg-ul

scripts/README-OUT.md

@@ -0,0 +1,14 @@
+# xPack GNU RISC-V Embedded GCC
+
+The **xPack GNU RISC-V Embedded GCC** (formely GNU MCU Eclipse RISC-V GCC)
+is the **xPack** version of the **GNU RISC-V Embedded GCC** toolchain
+maintained by **SiFive**.
+
+For more details, please read the corresponding release pages:
+
+- https://xpack.github.io/riscv-none-embed-gcc/releases/
+- https://github.com/sifive/freedom-tools/releases
+
+Thank you for using open source software,
+
+Liviu Ionescu