update build script (#407)

## Link to GitHub Issue, if one exists
n/a

## Description of change
Create a "full" version of the archive with api and extra binaries. The
normal archive remains in place with just src and stubs.

src/spice2x/launcher/launcher.cpp

@@ -1226,6 +1226,10 @@ int main_implementation(int argc, char *argv[]) {
 
     log_info("launcher", "{}", VERSION_STRING);
 
+    // note: distribution of modified version of this software without providing source is GPLv3 license violation.
+    log_info("launcher", "spice2x is free & open source; if you paid money for it, you got scammed");
+    log_info("launcher", "visit https://spice2x.github.io to download the latest version for free");
+
     // log command line arguments
     std::ostringstream arguments;
     for (auto &root_option : options) {