parse-cli-bin: add license

pkgs/development/tools/parse-cli-bin/default.nix

···
     description = "Parse Command Line Interface";
     homepage    = "https://parse.com";
     platforms   = platforms.linux;
+    license     = licenses.bsd3;
   };
 
   phases = "installPhase";
···
     cp "$src" "$out/bin/parse"
     chmod +x "$out/bin/parse"
   '';
-}
+}