Install error

[caryblack]

I am attempting to install Slogger and I receive an error after the "bundle install" command. I receive the following output:

Last login: Mon Jul 8 11:51:53 on ttys000
CB-MBA:~ caryblack$ cd Dropbox/Apps/Slogger/
CB-MBA:Slogger caryblack$ sudo gem install bundler
Successfully installed bundler-1.3.5
1 gem installed
Installing ri documentation for bundler-1.3.5...
Installing RDoc documentation for bundler-1.3.5...
CB-MBA:Slogger caryblack$ bundle install
Fetching gem metadata from https://rubygems.org/.........
Fetching gem metadata from https://rubygems.org/..
Resolving dependencies...
Using multipart-post (1.2.0)
Using faraday (0.8.7)
Installing hpricot (0.8.6)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ruby.h

Gem files will remain installed in /Users/caryblack/.bundler/tmp/711/gems/hpricot-0.8.6 for inspection.
Results logged to /Users/caryblack/.bundler/tmp/711/gems/hpricot-0.8.6/ext/fast_xs/gem_make.out

An error occurred while installing hpricot (0.8.6), and Bundler cannot continue.
Make sure that gem install hpricot -v '0.8.6' succeeds before bundling.
CB-MBA:Slogger caryblack$

I'll be the first to suggest this is user error, how can I fix this?

CB

[gmcz]

I was able to get past this by:

1. installing the latest version of XCode (from Mac AppStore)
2. installing command line tools from the Downloads pane in XCode Prefrences
3. running "sudo gem install rails" in terminal

[ttscoff]

Please see #168