readme.md in web_translate_it-2.0.1 vs readme.md in web_translate_it-2.0.2

- old
+ new
@@ -21,10 +21,12 @@
 
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 ## Installation
 
-You will need ruby to run wti. On Linux or a Mac, it’s already installed. Install [RubyInstaller](http://rubyinstaller.org/) if you’re using Windows. [See detailed installation instructions for Windows users](https://github.com/AtelierConvivialite/webtranslateit/wiki/Install-wti-on-Windows).
+A dependency of wti needs gcc in order to install, so you will need build tools. With Linux, `apt-get install gcc` or `yum install gcc` should do it.
+
+You will also need ruby to run wti. On Linux or a Mac, it’s already installed. Install [RubyInstaller](http://rubyinstaller.org/) if you’re using Windows. [See detailed installation instructions for Windows users](https://github.com/AtelierConvivialite/webtranslateit/wiki/Install-wti-on-Windows).
 
     gem install web_translate_it
     
 At this point you should have the `wti` executable working.
 