Initial changelog document
Initial Klein Upgrading Guide template
Bumping version in the install instructions
Added new features and bug-fixes to the CHANGELOG
Ironed out some details in the UPGRADING doc
Updating the installation instructions to no longer
specify the version, so that the user always gets the latest stable
PHPdoc mention?
Project description update
Merge pull request #223 from Rican7/feature/changelog-and-upgrading-doc

Feature - Changelog and Upgrading doc