Tachyon (Joomla), Epsilon (phpBB), Mercado (Joomla)
Merge branch 'staging' of https://github.com/rockettheme/docs into staging

Conflicts:
	Docs/phpbb/start/rocketlauncher.md
rocket launcher update phpbb
tachyon image replacement, description
RokBB description adjustment
phpBB Index Update
Merge pull request #39 from rockettheme/staging

Epsilon (phpBB), Tachyon (Joomla), Additional Updates