Minor doc tweaks, and new console raketask

Author: peterc

README.md

@@ -1,6 +1,6 @@
 # BitArray: A simple bit-array/bitfield library in pure Ruby
 
-Basic, pure Ruby bit field. Works well for Bloom filters (the use case for which I originally wrote it).
+A simple, pure-Ruby 'bit field' object. Works well for Bloom filters (the use case for which I originally wrote it).
 
 Originally written in 2007 and left without significant update until 2017, it has now been updated to work within a typical, modern Ruby environment while maintaining the same API.
 
@@ -63,7 +63,7 @@ ba.to_s # "0000111111110000"
 
 
 ## History
-- 1.2 in 2018 (Added option to skip reverse the bits for each byte)
+- 1.2 in 2018 (Added option to skip reverse the bits for each byte by @dalibor)
 - 1.1 in 2018 (fixed a significant bug)
 - 1.0 in 2017 (updated for modern Ruby, more efficient storage, and 10th birthday)
 - 0.0.1 in 2012 (original v5 released on GitHub)
@@ -77,7 +77,7 @@ ba.to_s # "0000111111110000"
 
 Thanks to Michael Slade for encouraging me to update this library on its 10th birthday and for suggesting finally using String's getbyte and setbyte methods now that we're all on 1.9+ compatible implementations.
 
-Further thanks to @tdeo, @JoshuaSP, and @m1lt0n for pull requests.
+Further thanks to @tdeo, @JoshuaSP, @dalibor and @m1lt0n for pull requests.
 
 ## License
 

Rakefile

@@ -2,4 +2,10 @@ require "bundler/gem_tasks"
 require "rake/testtask"
 
 Rake::TestTask.new
+
 task :default => :test
+
+desc "Open an irb session to work with bitarray"
+task :console do
+  sh "irb -rubygems -I lib -r bitarray"
+end