install in rvm-0.0.52 vs install in rvm-0.0.53

@@ -29,69 +29,17 @@
 for file_name in rvm-prompt gemsync ; do
   mv $rvm_path/scripts/$file_name $rvm_path/bin/
   chmod +x $rvm_path/bin/$file_name
 done ; unset file_name
 
-results=$(grep 'scripts/rvm' ~/.bash_profile ~/.bashrc ~/.zshrc > /dev/null)
-if [ $? -gt 0 ] ; then
-  if [ ! -z "`echo $PS1`" ] ; then
-    while : ; do
-      echo -n -e "$question Do you want this (s)cript to set this up for you, or do it (m)anually yourself ('s' or 'm')? "
-      read response
-      if [ "${response:0:1}" = "s" ] ; then
-        echo 'w00t!'
-        break
-      elif [ "${response:0:1}" = "m" ] ; then
-        echo -e "    Please make sure that this line is in place."
-        break
-      fi
-    done
-
-    if [ "${response:0:1}" = "s" ] ; then
-
-      while : ; do
-        echo -n -e "$question Do you use b(a)sh or (z)sh or b(o)th for your shell (the default on most *nix systems is bash, press control + C to cancel the installation)\n(a/z/o)? "
-        read response
-        if [ "${response:0:1}" = "a" ] ; then
-          user_shell="bash"
-          break
-        elif [ "${response:0:1}" = "z" ] ; then
-          user_shell="zsh"
-          break
-        elif [ "${response:0:1}" = "o" ] ; then
-          user_shell="both"
-          break
-        fi
-      done
+if [ -z "$rvm_loaded_flag" ] ; then
+  for rcfile in .bash_profile .bashrc .zshrc ; do
+    if [ ! -e ~/$rcfile ] ; then touch ~/$rcfile ; fi
+    if [ -z "$(awk '/\.rvm\/scripts\/rvm/' ~/$rcfile)" ] ; then
+      echo "Adding 'if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi' to your ~/$rcfile."
+      echo -e "\n# rvm installer added line:\nif [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi\n" >> ~/$rcfile
     fi
-  else
-    user_shell="both"
-  fi
-
-  if [ "$user_shell" = "bash" -o "$user_shell" = "both" ] ; then
-    touch ~/.bash_profile
-    if [ -z "`grep '\.rvm/scripts/rvm' ~/.bash_profile`" ] ; then
-      echo "Adding 'if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi' to your ~/.bash_profile."
-      echo -e "\n" >> ~/.bash_profile
-      echo "if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi" >> ~/.bash_profile
-    fi
-    touch ~/.bashrc
-    if [ -z "`grep '\.rvm/scripts/rvm' ~/.bashrc`" ] ; then
-      echo "Adding 'if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi' to your ~/.bashrc."
-      echo -e "\n" >> ~/.bashrc
-      echo "if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi" >> ~/.bashrc
-    fi
-
-  fi
-
-  if [ "$user_shell" = "zsh" -o "$user_shell" = "both" ] ; then
-    touch ~/.zshrc
-    if [ -z "`grep '\.rvm/scripts/rvm' ~/.zshrc`" ] ; then
-      echo "Adding 'if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi' to your ~/.zshrc."
-      echo -e "\n" >> ~/.zshrc
-      echo "if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi" >> ~/.zshrc
-    fi
-  fi
+  done
 fi
 
 echo -e "\n    Ensuring that rvm script location in $file is scripts/rvm not bin/rvm for: ~/.bash_profile, ~/.bashrc, ~/.zshrc..."
 for file in ~/.bash_profile ~/.bashrc ~/.zshrc ; do
   if [ -s $file ] ; then