metasploit-framework

Added a few more paragraphs describing what Metasploit is in the 'Introduction' chapter.

Moved the 'Datastore' chapter to after the 'Using the Metasploit Framework' chapter as learning about the datastore isn't necessary until after the user has learned how to use msfconsole first.

Removed some references to Metasploit 3.x. Also cleaned up paragraphs explaining msfgui.

Expanded upon and added some more verbosity to the chapter on the datastore. Changed 'DataStore' to 'datastore'. The reason being because 'DataStore' is a keyword referring to the actual Ruby class while the word 'datastore' refers to the abstract concept of a 'DataStore' represents. The user doesn't care what the name of the class is and just raises confusion. Also updated a few references to msf3.