h2(#dependencies). Install dependencies
<notextile>
-<pre><code>~$ <span class="userinput">sudo apt-get install libcurl3 libcurl3-gnutls libcurl4-openssl-dev \
- libxslt1.1 zlib1g-dev gettext bison libssl-dev libreadline-dev \
- libpq-dev sqlite3 libsqlite3-dev build-essential wget postgresql sudo
+<pre><code>~$ <span class="userinput">sudo apt-get install \
+ bison build-essential gettext libcurl3 libcurl3-gnutls \
+ libcurl4-openssl-dev libpcre3-dev libpq-dev libreadline-dev \
+ libsqlite3-dev libssl-dev libxslt1.1 postgresql sqlite3 sudo \
+ wget zlib1g-dev
</span></code></pre></notextile>
h2(#ruby). Install Ruby and bundler