Change bacticks to 4 spaces in MD

README.md

@@ -56,26 +56,21 @@ From Ubuntu 14.04:
 
 ####Installing on Debian:
 
-```bash
     sudo apt-get install git ruby ruby-dev libcurl4-gnutls-dev
     git clone https://github.com/wpscanteam/wpscan.git
     cd wpscan
     sudo gem install bundler
     bundle install --without test --path vendor/bundle
-```
 
 ####Installing on Fedora:
 
-```
     sudo yum install gcc ruby-devel libxml2 libxml2-devel libxslt libxslt-devel libcurl-devel
     git clone https://github.com/wpscanteam/wpscan.git
     cd wpscan
     sudo gem install bundler && bundle install --without test
-```
 
 ####Installing on Archlinux:
 
-```
     pacman -Syu ruby
     pacman -Syu libyaml
     git clone https://github.com/wpscanteam/wpscan.git
@@ -83,20 +78,17 @@ cd wpscan
     sudo gem install bundler && bundle install --without test
     gem install typhoeus
     gem install nokogiri
-```
 
 ####Installing on Mac OSX:
 
 Apple Xcode, Command Line Tools and the libffi are needed (to be able to install the FFI gem), See http://stackoverflow.com/questions/17775115/cant-setup-ruby-environment-installing-fii-gem-error
 
-```
     git clone https://github.com/wpscanteam/wpscan.git
     cd wpscan
     sudo gem install bundler && sudo bundle install --without test
-```
 
 ####Installing with RVM:
-```
+
     cd ~
     curl -sSL https://get.rvm.io | bash -s stable
     source ~/.rvm/scripts/rvm
@@ -108,7 +100,6 @@ gem install bundler
     git clone https://github.com/wpscanteam/wpscan.git
     cd wpscan
     bundle install --without test
-```
 
 #### KNOWN ISSUES