defunkt/gist — pull request #152 by weakish (2013-11-10 15:49:50+00:00)
Title: improve install instructions on README.md

If a Debian/Ubuntu user have not installed ruby1.9-dev before, when they use `gem install gist`, they will get this error:

```

$ sudo gem install gist
Building native extensions. This could take a while...
ERROR: Error installing gist:
ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from extconf.rb:1:in `

'
```

This is because `mkmf.rb` is missing on their system.

Thus they need to install `mkmf.rb`, which is included in the `ruby1.9-dev` package.

After that, `gem install gist` works.