update README and make sure that the gem information is accurate
update readme and rakefile to remove references to rubyforge and add useful links
assume that everything that is non-1.8 is 1.9-compatible code

This fixes the issue with installing on ruby 2.0
remove swap!

It was a nice trick, but honestly ...
fix tests for NoMethodError being properly thrown in dsl_exec and load_dsl_file

Recent ruby 1.9 versions raise NameError if an undefined call can
either be a method or local variable missing. Append () to make
sure that it gets interpreted as a method call.
prepend ./ in front of relative requires, as needed by ruby 1.9 and later
git: add ignores required by the move to rake-compiler and yard
remove last references to Kernel.swap!
add minor readline extensions
remove useless reference to RUBINIUS
add missing dependency on readline
update Manifest.txt to include all new classes
release 2.0.1
remove references to the (extremely buggy) ruby 1.9.1, and replace RUBY_IS_19 by RUBY_IS_18
ignore pkg/ (used by hoe)
rename Init_readline to Init_utilrb_readline, the former seem to conflict with the one from ruby's readline extension
Add linker flag for readline
Add hoe dependency to Rakefile
Adding stdio.h to readline.c after reports of build error on archlinux variant

Reported error was:
/usr/include/readline/readline.h:868:3: error: unknown type name ‘FILE’
Require fcntl to fix Utilrb::spawn