Added horizontal rule and changed title.
Removed note about the .dev.local domain.
Added an H2 header for installation.
Took out JDK6 install since it's EOL'ed.
Added a Debian/Ubuntu version of the installation, with the .deb package instead of unzipping a tarball manually.
Removed the section about creating an init.d script since the package installs one.
Reworked config section; added note about making a folder for the Elasticsearch data and setting the owner/group on it.
Added full path to the plugin binary.
Removed Tuning placeholder section.
Created new plugin section out of the plugin step that was there before.
Got rid of the section on starting Elasticsearch.
Added an H3 section for miscellaneous things.
Added a note on URLs for monitoring cluster stats and health.