Changed vagrant installation to copy makahiki_env.sh instead of creating it manually and appending text.
install/doc/redhat_readme.txt: Edits to memcached sections.
vagrant/doc/ubuntu_x86_vagrant_readme.txt: Edits to memcached sections.
Vagrant: Added code to copy or append memcached configuration to makahiki_env.sh
Removed duplicate .gitignore file in install directory.