Fix #37 Needed packages for nokogiri added to readme, and while the missing gem detected is nokogiri

README

@@ -34,13 +34,13 @@ WPScan comes pre-installed on BackTrack5 R1 in the /pentest/web/wpscan directory
 
   -> Installing on Backtrack5 Gnome/KDE 32bit :
 
-    sudo apt-get install libcurl4-gnutls-dev
+    sudo apt-get install libcurl4-gnutls-dev libxml2 libxml2-dev libxslt1-dev
     sudo gem install --user-install mime-types typhoeus nokogiri json
 
 
   -> Installing on Debian/Ubuntu :
 
-    sudo apt-get install libcurl4-gnutls-dev libopenssl-ruby
+    sudo apt-get install libcurl4-gnutls-dev libopenssl-ruby libxml2 libxml2-dev libxslt1-dev
     sudo gem install typhoeus nokogiri json
 
 

README.md

@@ -33,7 +33,7 @@ WPScan only supports Ruby => 1.9.
 
 *Installing on Debian/Ubuntu:*
 
-```sudo apt-get install libcurl4-gnutls-dev libopenssl-ruby```
+```sudo apt-get install libcurl4-gnutls-dev libopenssl-ruby libxml2 libxml2-dev libxslt1-dev```
 
 ``` sudo gem install typhoeus nokogiri json```
 

lib/environment.rb

@@ -42,6 +42,11 @@ rescue LoadError => e
 
   missing_gem = e.to_s[%r{ -- ([^\s]+)}, 1]
   if missing_gem
+    if missing_gem =~ /nokogiri/i
+      puts
+      puts "Nokogiri needs some packets, please run 'sudo apt-get install libxml2 libxml2-dev libxslt1-dev' to install them. Then run the command below"
+      puts
+    end
     puts "[TIP] Try to run 'gem install #{missing_gem}' or 'gem install --user-install #{missing_gem}'. If you still get an error, Please see README file or https://github.com/wpscanteam/wpscan"
   end
   exit(1)