Update README

README

@@ -79,6 +79,20 @@ ryandewhurst at gmail
     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
+    echo "source ~/.rvm/scripts/rvm" >> ~/.bashrc
+    rvm install 2.1.2
+    rvm use 2.1.2 --default
+    echo "gem: --no-ri --no-rdoc" > ~/.gemrc
+    git clone https://github.com/wpscanteam/wpscan.git
+    cd wpscan
+    gem install bundler
+    bundle install --without test
+
 ==KNOWN ISSUES==
 
   - Typhoeus segmentation fault: