upgrading to Mountain Lion

gistfile1.sh

# run Apple's Software Update
# open XCode, then XCode(menu)->Preferences->Downloads tab and Install the Command Line Tools

brew update
brew doctor
# follow any instructions - mine are included below

brew tap homebrew/dupes
brew install autoconf automake apple-gcc42
brew link apple-gcc42 # for some reason this didn't work in prior step

# reinstall RVM
rvm implode
curl -L https://get.rvm.io | bash -s stable --ruby
rvm pkg install openssl

brew uninstall imagemagick && brew install imagemagick

cd PROJECT_DIR
bundle install