List prism as a default gem

doc/maintainers.md

@@ -225,6 +225,12 @@ have commit right, others don't.
 * https://github.com/ruby/prettyprint
 * https://rubygems.org/gems/prettyprint
 
+#### lib/prism.rb
+* Kevin Newton (kddnewton)
+* Jemma Issroff (jemmaissroff)
+* https://github.com/ruby/prism
+* https://rubygems.org/gems/prism
+
 #### lib/pstore.rb
 * *unmaintained*
 * https://github.com/ruby/pstore

doc/standard_library.rdoc

@@ -61,6 +61,7 @@ OpenStruct:: Class to build custom data structures, similar to a Hash
 OpenURI:: An easy-to-use wrapper for Net::HTTP, Net::HTTPS and Net::FTP
 PP:: Provides a PrettyPrinter for Ruby objects
 PrettyPrinter:: Implements a pretty printing algorithm for readable structure
+Prism:: A portable, error-tolerant Ruby parser
 PStore:: Implements a file based persistence mechanism based on a Hash
 Readline:: Wrapper for Readline extencion and Reline
 Reline:: GNU Readline and Editline by pure Ruby implementation.