added -e flag to echo in install.sh

in order for newline characters to be parsed correctly

install.sh

@@ -38,8 +38,8 @@ else
 	    cat autojump.bash >> ~/.bashrc
             OS=`uname`
             if [ $OS == 'Darwin' ]; then
-              echo "# Get the aliases and functions" 
-              echo "\nif [ -f ~/.bashrc ]; then\n  . ~/.bashrc\nfi" >> ~/.bash_profile
+               echo -e "\n# Get the aliases and functions" >> ~/.bash_profile
+               echo -e "\nif [ -f ~/.bashrc ]; then\n  . ~/.bashrc\nfi" >> ~/.bash_profile
             fi
 	else
 	    echo "Then you need to put autojump.sh, or the code from it, somewhere where it will get read. Good luck!"