add top-level LICENSE

diff --git a/LICENSE b/LICENSE
new file mode 100644 (file)
index 0000000..f4001a0
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,5 @@
+NetWatch License
+
+Portions of NetWatch are distributed under a number of different licenses:
+- The contents of lwip/ are covered by lwip/COPYING
+- Other files contain copyright headers at the top of the file.