Hello, I'm working to install Rails 3 (pre) on my Mac, from the Rails
blog post it says to run:
gem install rails --pre
After running that command I get the following errors:
WARNING: Installing to ~/.gem since /Library/Ruby/Gems/1.8 and
/usr/bin aren't both writable.
WARNING: You don't have /Users/myusername/.gem/ruby/1.8/bin in your
gem executables will not run.
ERROR: Error installing rails:
activemodel requires builder (~> 2.1.2, runtime)
was there a step required before running the install that wasn't
mentioned on the blog post?