add top-level README and licencing information

basically, each file must define its licence, all must be OSI approved

diff --git a/0-README b/0-README
new file mode 100644 (file)
index 0000000..75a102d
--- /dev/null
+++ b/0-README
@@ -0,0 +1,6 @@
+Shell snippets of random value.
+Each of the snippets is separate and may have separate authors.
+Some are private, some company-provided.
+
+All of them MUST have an OSI approved licence.
+For licencing conditions, look into each file separately.