integrate go secureput signaling, fix python version, document a bit, etc

signaling/python/secret.py

@@ -0,0 +1,12 @@
+import random
+
+runes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+
+def rand_seq(n):
+    b = []
+    for i in range(n):
+        b.append(random.choice(runes))
+    return "".join(b)
+
+def generate_secret_key():
+    return rand_seq(32)