[DOC] Satisfy RDoc coverage

Author: nobu

.document

@@ -1,3 +1,4 @@
 LICENSE.txt
 README.md
+docs/
 lib/

docs/random.rb

@@ -0,0 +1,10 @@
+# This file is only for RDoc
+
+# Random provides an interface to Ruby's pseudo-random number generator, or
+# PRNG.
+#
+# See also Random::Formatter module that adds convenience methods to generate
+# various forms of random data.
+
+class Random
+end

lib/securerandom.rb

@@ -53,6 +53,8 @@ def bytes(n)
 
     private
 
+    # :stopdoc:
+
     # Implementation using OpenSSL
     def gen_random_openssl(n)
       return OpenSSL::Random.random_bytes(n)
@@ -84,6 +86,8 @@ def gen_random_urandom(n)
       end
     end
 
+    # :startdoc:
+
     # Generate random data bytes for Random::Formatter
     public :gen_random
   end